Mumbaii Expeeriment: Crime thriller novel mystery suspense drama

by Dhaval Birajdar

One body. Then another. And another. Each crime more brutal than the last. For John and his team, what begins as just another investigation quickly spirals into a chilling pattern of murders that grips the entire city. Gripping, gory, and relentlessly tense, this isn’t just another murder mystery.

272 pages, Kindle Edition

Published September 27, 2025

Reviews

[Dr.Javed Rasheed · Rating 4 out of 5]

First time I read this book by this author. I found the plot to be a little fascinating especially when it comes to the mindset of an intelligent qualified serial killer as the story unfolds. The trials and tribulations of the middle class in Mumbai a story with human emotions, aspirations, friendships and frustrations. I liked John who had a lot of aspirations and ambitions but the irony of life placed him admits circumstances where destiny took him in police force like his dad where he wanted to be and where he thought he really belonged though an intelligent engineer by profession earlier. A good dutiful son, trying to be a good husband and a dad. Felt bad for Priya who is an important character in the story and the reader has mixed feelings and emotions of sympathy, empathy towards her. A lot of research has been done on Thermodynamics that seems to form a pattern and a kind of puzzle to be solved which John eventually does. A different kind of a mystery and suspense and the author does not disappoint. It’s 4 stars from my side !
Dr. Javed Rasheed

[bookswithchaipai · Rating 4 out of 5]

Mumbai isn’t just about glitz and glamour. Birajdar reveals the flip side of tinsel town,what happens behind closed doors and how the minds of the police truly work.

I’ve always loved police procedurals, and serial killer stories are my absolute favourite. This Diwali, I curled up under a blanket with a steaming cup of coffee and dived straight into this one.

The book is multilayered. Its protagonist, Inspector John, is mired in marital problems, navigating police politics, and haunted by a fragment of his past. The case he’s working on grows increasingly complex: a series of mechanical engineers are being murdered in strange, calculated ways, and the team is racing against time to solve it.

I especially loved the ingenious twist, the formula which connects the murders to each other. The story also stirred my anger at the injustice of a student’s stolen project that went unpunished.

Above all, I adore it when a city becomes a character in itself. The depiction of victims is grisly and grotesque, the pacing relentless, and Mumbai thrums through every page.

[Rahul Vishnoi · Rating 5 out of 5]

-A Police Procedural Thriller That Will Give You Shivers-
Review of 'Mumbaii Expeeriment'

Quote Alert
"𝐓𝐡𝐞 𝐬𝐮𝐧 𝐡𝐚𝐝 𝐚𝐥𝐫𝐞𝐚𝐝𝐲 𝐛𝐞𝐠𝐮𝐧 𝐭𝐨 𝐬𝐞𝐭, 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐦𝐚𝐧 𝐰𝐚𝐬 𝐟𝐢𝐧𝐚𝐥𝐥𝐲 𝐩𝐮𝐥𝐥𝐞𝐝 𝐨𝐮𝐭 𝐚𝐧𝐝 𝐩𝐥𝐚𝐜𝐞𝐝 𝐨𝐧 𝐚 𝐦𝐚𝐤𝐞𝐬𝐡𝐢𝐟𝐭 𝐬𝐭𝐫𝐞𝐭𝐜𝐡𝐞𝐫. 𝐖𝐡𝐚𝐭 𝐈 𝐝𝐢𝐝𝐧’𝐭 𝐧𝐨𝐭𝐢𝐜𝐞 𝐢𝐧𝐢𝐭𝐢𝐚𝐥𝐥𝐲 𝐰𝐚𝐬 𝐭𝐡𝐚𝐭 𝐡𝐢𝐬 𝐛𝐨𝐝𝐲 𝐰𝐚𝐬 𝐭𝐰𝐢𝐬𝐭𝐞𝐝 𝐢𝐧 𝐚𝐧 𝐮𝐧𝐬𝐞𝐭𝐭𝐥𝐢𝐧𝐠 𝐰𝐚𝐲. 𝐀𝐧 𝐨𝐯𝐞𝐫𝐬𝐢𝐳𝐞𝐝 𝐬𝐮𝐢𝐭 𝐣𝐚𝐜𝐤𝐞𝐭 𝐡𝐮𝐧𝐠 𝐥𝐨𝐨𝐬𝐞𝐥𝐲 𝐨𝐧 𝐡𝐢𝐦, 𝐰𝐢𝐭𝐡 𝐛𝐮𝐭𝐭𝐨𝐧𝐬 𝐭𝐡𝐚𝐭 𝐬𝐞𝐞𝐦𝐞𝐝 𝐚𝐥𝐦𝐨𝐬𝐭 𝐜𝐨𝐦𝐢𝐜𝐚𝐥𝐥𝐲 𝐥𝐚𝐫𝐠𝐞 𝐚𝐠𝐚𝐢𝐧𝐬𝐭 𝐭𝐡𝐞 𝐬𝐢𝐦𝐩𝐥𝐞 𝐟𝐚𝐛𝐫𝐢𝐜. 𝐇𝐢𝐬 𝐬𝐡𝐢𝐫𝐭 𝐰𝐚𝐬 𝐫𝐚𝐠𝐠𝐞𝐝, 𝐚𝐧𝐝 𝐡𝐢𝐬 𝐚𝐛𝐝𝐨𝐦𝐞𝐧 𝐬𝐡𝐨𝐰𝐞𝐝 𝐭𝐡𝐞 𝐡𝐚𝐫𝐬𝐡 𝐫𝐞𝐚𝐥𝐢𝐭𝐲 𝐨𝐟 𝐡𝐢𝐬 𝐨𝐫𝐝𝐞𝐚𝐥—𝐝𝐞𝐞𝐩 𝐰𝐨𝐮𝐧𝐝𝐬 𝐞𝐭𝐜𝐡𝐞𝐝 𝐢𝐧𝐭𝐨 𝐡𝐢𝐬 𝐬𝐤𝐢𝐧, 𝐫𝐞𝐯𝐞𝐚𝐥𝐢𝐧𝐠 𝐭𝐡𝐞 𝐬𝐮𝐟𝐟𝐞𝐫𝐢𝐧𝐠 𝐡𝐞 𝐡𝐚𝐝 𝐟𝐚𝐜𝐞𝐝. 𝐈𝐭 𝐰𝐚𝐬 𝐚 𝐡𝐞𝐚𝐫𝐭-𝐰𝐫𝐞𝐧𝐜𝐡𝐢𝐧𝐠 𝐬𝐢𝐠𝐡𝐭, 𝐨𝐧𝐞 𝐭𝐡𝐚𝐭 𝐬𝐭𝐫𝐢𝐩𝐩𝐞𝐝 𝐚𝐰𝐚𝐲 𝐭𝐡𝐞 𝐬𝐞𝐧𝐬𝐞 𝐨𝐟 𝐡𝐮𝐦𝐚𝐧𝐢𝐭𝐲 𝐢𝐧 𝐭𝐡𝐞 𝐦𝐨𝐦𝐞𝐧𝐭."

Mumbaii Expeeriment is a police procedural thriller with enough thrills and chill to keep you rooted to your chair. And not just thrills, it also has enough dramatic flair to keep you associate and relate with the characters too.

A murder connects John to his past Priya. The ruthlessly killed man points at a personal connection. But the bodies keep coming and John has to race against time, and catch the killer, while grappling with internal department politics, his crumbling domestic haven and his past now dissolving into his present. Will he be able to sort his life out of these multiple cyclones that are all hurtling towards him? Well I am not going to tell you everything here. Read the book to find out more.

The stories with mystry and thrill at their core must be wrapped up in a cozy blanket of emotions and humanity. And the author has successfully achieved a pulsing, throbbing veneer of raw, unfiltered emotions here. He hasn't let the story run dry. The violence is effectively countered with drama and emotions here. The nuances of the interaction between police officers is especially worth mentioning. The entire scene between a constable asking his superior to not address him by the first name is something that can only come out of a deep understanding of human behaviour or meticulous research. Having served in defence, I can vouch for the veracity of this conversation between the two officers of varying hierarchy.

Strong characters make for strong stories. If the characters are flaky or one dimensional, the joy of reading a book, even if the story is interesting, is rendered half. The characters of this story are unpredictable, impulsive, multi dimensional and drive the story forward. It's a delight to see a character-driven story because their actions are as interesting as the plot and the twists. This also makes up for layering of the characters, adding a touch of humanity to papery words and that's just delightful.
Have a look:
“We all have our imperfections, Sumit. I often think this isn’t the right path for me. We find ourselves in a world where the rules have not only shifted but have truly shattered. The younger generation holds distinct dreams and ambitions. Welcome the idea of adapting to your surroundings and accept your seniority instead of holding onto strict beliefs. Don’t be so hard on yourself and stop questioning the worth of what you provide.”

The passages written around the murder are harrowing. Have a look:
"The horrific images of the lifeless body returned in my memory, and the sheer savagery of it all was almost unbearable. How could someone feel such rage? Could such rage lead to such a horrible act? There was a deep-seated rage there, an emotion that seemed to reverberate beyond words. I had a tremendous desire to uncover the truth."
I also liked the mystery the numbers marked on victim’s foot:
“Tattooed?” “Like how people brand their cows and buffalo in villages,” he concurred. “It seems like the person behind this wanted us to notice his branding, showcasing it like a work of art. The motive was to bring our attention to every single detail. This wasn’t merely a chance act of violence.”

As the story progresses, the author builds up emotion and drama, and throws the characters into the mix. The reader can't help build a bridge of empathy with the lives of these people. An emotional cord is immediately hooked and it continues until the last page is turned over.

The author has successfully crafted and engaging mystery and these standalone passages prove the intrigue:
“As I examined the body, I could not shake the thought of whether the victim had fought back and tried to defend himself against his attacker. But there was nothing—nothing—no skin, no saliva under his nails. When someone is in such agony, it is only human to expect some sign of resistance—maybe shouting, thrashing, or some other response.”

Come, solve this mystery with John and his ensemble cast of cops and officers.

[Bibliophile · Rating 4 out of 5]

In “Mumbaii Expeeriment”, every page drips with tension and unease. The story begins with a single crime scene, brutal, haunting, and puzzling. But before Detective John and his team can make sense of it, another murder happens, then another. Each killing seems more deliberate, more violent, and somehow connected. What begins as an investigation soon becomes a deadly game of cat and mouse.

The author Mr. Dhaval Birajdar does a brilliant job of building suspense. The pacing is tight but there are no dull moments. You feel the exhaustion and fear of the investigators as the body count rises and the clues grow more confusing. Mumbai itself becomes a central part of the story, loud, crowded, unpredictable, and dangerous. You can almost hear the sirens, smell the rain-soaked streets, and sense the panic spreading through the city.

John is a strong and believable lead, tough, determined, but also deeply human. His doubts and instincts make the story relatable and real. The team dynamics add depth, and the interactions between characters give emotional weight to the grim events unfolding around them.

What I enjoyed most were the unexpected twists. Just when you think the case is solved, a shocking revelation flips everything upside down. The ending is both surprising and satisfying, leaving you with a chill long after the last page.

Towards the end, it reminds us that while the past will always linger, the future holds the promise of healing, understanding, and new beginnings. We can learn to trust again, to embrace the complexities of life, and to find solace in the connections we still hold dear.

“Mumbaii Expeeriment” is a gripping mix of crime, mystery, and emotion, a must-read for anyone who enjoys dark thrillers that keep you thinking and guessing till the very end.

[Prahelika · Rating 5 out of 5]

An Immersive Read

Woke up from my reading slumber with this book. What I started out to be a casual, laid-back reading turned out to be an edge-of-the-seat, unputdownable read. A plot that thickens as it gradually peels off the complex layers. Set against the backdrop of bustling Mumbai life, the crime thriller fiction masterfully uses exposition and symbolism to mirror inner turmoil and external chaos. Boundaries are blurred, as the narrative intertwines the past and present, personal and professional, scientific theories and philosophical spirit. An intellectual chase wherein the readers connect the dots with the main lead. Author Birajdar’s book is engrossing, as he leads you through twists, turns and astute observations.

[♡ Diyasha ♡ · Rating 5 out of 5]

𝐁𝐎𝐎𝐊 𝐑𝐄𝐕𝐈𝐄𝐖: MUMBAII EXPERIMENT
𝐀𝐔𝐓𝐇𝐎𝐑: DHAVAL BIRAJDAR

♪ I am sorry but no one made me aware that the topic which I was supposed to dive in is this much horrific! I mean yes, I do love crime thrillers - but that much intensity? who does that? this raises my standard to the Indian crime thriller genre - and I blame this one.

♪ There are patterns - unfolding layer by layer across Mumbai. The crimes that are going on in this city look unrelated but something about them feels too precise and intentional. Young mechanical engineers are being murdered one after another - this is not random. Someone is chasing the victims carefully. 

♪ To handle all of these and investigating team steps in naming detective John. He becomes the emotional anchor of this investigation: calm, observant and deeply aware of the pressure. These all filled the emotional environment that those victims lived in. As the investigation deepens, the police uncover surprising similarities in the victims' lives. 

♪ All were mechanical engineers. All dealt with intense academic and career pressure. Many struggled with mental, financial or family burdens. Each had a part of their life hidden from people around them. The team slowly realises that these murders are not merely crimes - they are the part of an experiment. Someone is using the city itself as a laboratory, testing how a person can be pushed before society looks up and notices. 

♪ Crowded suburban trains, college campuses, stressful workplaces, tight rented Mumbai flats - at every step and in the city, it feels chaotic, crowded and it is the fact that they are shaping the direction of the case. The police struggle to understand the killer's motive. Why engineers? Maybe that lies in the killer's past. 

♪ With every turn of the page, the truth is revealed. The investigators realise the killer is not driven by thrill madness but by a deep sense of injustice. That is a suffocation! The final act feels like face-to-face with a motive that actually makes sense. There's a mix of justice, realization and tragedy. 

"𝐈 𝐟𝐞𝐥𝐭 𝐚 𝐰𝐚𝐯𝐞 𝐨𝐟 𝐜𝐨𝐧𝐟𝐥𝐢𝐜𝐭𝐢𝐧𝐠 𝐞𝐦𝐨𝐭𝐢𝐨𝐧𝐬 𝐰𝐚𝐬𝐡 𝐨𝐯𝐞𝐫 𝐦𝐞. 𝐇𝐞𝐫𝐞 𝐰𝐚𝐬 𝐚 𝐦𝐚𝐧 𝐰𝐡𝐨 𝐡𝐚𝐝 𝐭𝐰𝐢𝐬𝐭𝐞𝐝 𝐡𝐢𝐬 𝐥𝐨𝐯𝐞 𝐟𝐨𝐫 𝐬𝐜𝐢𝐞𝐧𝐜𝐞 𝐢𝐧𝐭𝐨 𝐚 𝐣𝐮𝐬𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐟𝐨𝐫 𝐦𝐮𝐫𝐝𝐞𝐫, 𝐲𝐞𝐭 𝐭𝐡𝐞𝐫𝐞 𝐰𝐚𝐬 𝐚 𝐩𝐚𝐫𝐭 𝐨𝐟 𝐦𝐞 𝐭𝐡𝐚𝐭 𝐜𝐨𝐮𝐥𝐝𝐧'𝐭 𝐡𝐞𝐥𝐩 𝐛𝐮𝐭 𝐞𝐦𝐩𝐚𝐭𝐡𝐢𝐬𝐞 𝐰𝐢𝐭𝐡 𝐡𝐢𝐬 𝐢𝐧𝐭����𝐥𝐥𝐞𝐜𝐭𝐮𝐚𝐥 𝐩𝐚𝐬𝐬𝐢𝐨𝐧, 𝐞𝐯𝐞𝐧 𝐢𝐟 𝐢𝐭 𝐰𝐚𝐬 𝐭𝐫𝐚𝐠𝐢𝐜𝐚𝐥𝐥𝐲 𝐦𝐢𝐬𝐝𝐢𝐫𝐞𝐜𝐭𝐞𝐝."

♪ Mumbaii Expeeriment is actually a crime thriller which pairs a readable police investigation with social observations. There's a professional pressure. The victims are secondary cast here - the book is cinematic yet fast paced. I love how the chapters included the characters as a sign of momentum. Certain themes are diluted in the plot - urban pressure and ambition, academic or professional expectations, loneliness, social neglect - and often we misuse these terms. 

♪ If you love city set thrillers with investigation and social snapshot, then this book is well suited.

[BookNomad · Rating 4 out of 5]

“Mumbaii Expeeriment” is a dark, fast-paced crime thriller that pulls you into the heart of Mumbai’s chaos and never lets go. It begins with one gruesome murder and soon, the city is shaken as more bodies turn up, each killing more brutal and twisted than the last. Detective John and his team are assigned to what seems like a routine case, but they quickly find themselves trapped in a terrifying pattern of murders that hint at something far more sinister.

What stands out most about this novel is the atmosphere. Dhaval Birajdar paints Mumbai as more than just a backdrop, it’s alive, breathing, and hiding its own secrets in every alley and shadow. The story moves through the city’s bustling streets, dark corners, and sleepless nights, capturing both its beauty and brutality. The tension builds slowly at first, then explodes into a rush of fear and urgency as John realizes the killer might be closer than he thinks.

As our protagonist said to his mom, “You’ve taught me that making decisions and standing by them is the most important thing. That’s my biggest education - not the degree, not the research. Life has taught me to be strong, and you’ve taught me to trust my instincts. And this is what I want. I want to make a difference in the world, whether it’s through engineering and service.” This will resonate with all readers.

The writing is clear and cinematic, making it easy to imagine each chilling scene. The dialogues feel real, the investigation process is detailed, and the twists are genuinely surprising. Just when you think you’ve figured it out, the story turns in a new direction.

Overall, “Mumbaii Expeeriment” is not just a murder mystery, it’s a psychological journey through obsession, fear, and the thin line between good and evil. It’s perfect for readers who love thrillers filled with suspense, grit, and unforgettable characters.

[Vanshika Ratoliya · Rating 5 out of 5]

Dhaval Birajdar’s Mumbaii Expeeriment is not just a book—it’s an electric pulse that runs straight through the veins of Mumbai and straight into the reader’s imagination.
From the very first page, Birajdar throws you into a world where every moment crackles with curiosity, courage, and the raw, unstoppable spirit of the city that never slows down. This is not your typical Mumbai story. It’s a daring, unpredictable, wonderfully chaotic experiment—precisely the kind only Mumbai can host.
What makes this book truly gripping is its fearless storytelling. Birajdar writes with the confidence of someone who isn’t merely narrating events but conducting an experience. Every chapter opens like a sealed doorway to a new dimension—mysterious, emotional, sometimes unsettling, yet always irresistible. Just when you think you understand what’s happening, the story tilts, transforms, and surprises you all over again.
The characters breathe with authenticity. They stumble through ambition, heartbreak, discovery, and the gritty reality of modern life—yet they carry an unbreakable hope, the kind only Mumbai teaches you. Their journeys collide and explode in ways that feel cinematic, almost as if the book were begging to become a blockbuster film.
Birajdar’s writing is rich, rhythmic, and wonderfully bold. His descriptions trap you in the atmosphere, the dialogues feel pulled straight from real streets, and the emotional undercurrents hit with a force that lingers long after you close the final page.
This is a story for readers who crave something new. Something alive. Something that refuses to fit inside predictable boundaries.
If you pick up Mumbaii Expeeriment, prepare yourself:
You’re not just reading a book—you’re stepping into an adventure that will grip you, shake you, question you, and ultimately leave you wanting more.
A superb, inventive, and deeply captivating read.

[Pratibha Malav · Rating 4 out of 5]

Dhaval Birajdar’s “Mumbaii Expeeriment” is a dark, gripping, and brilliantly crafted crime thriller that pulls readers straight into the heart of Mumbai’s most chilling murder spree. What begins as a routine investigation for Inspector John swiftly escalates into a series of brutal killings—each more disturbing than the last. But the real shock lies not just in the gore, but in the disturbing realization that the victims are tied to John’s own past.

Birajdar builds this story with exceptional precision. The characters are layered, flawed, and painfully human. John, in particular, stands out as a protagonist whose past shadows every choice he makes, making him both unpredictable and deeply relatable. The author gives each character an elaborate background, creating connections you never see coming and ensuring that no one in the story feels disposable.

The plot is wonderfully unpredictable. Just when you believe you’ve figured out the pattern, the story swerves in a new direction, revealing hidden motives, darker truths, and twists that leave you stunned. Nothing feels forced; instead, each detail enriches the suspense.

Emotionally, this novel is powerful. You don’t just read the characters—you feel them. Birajdar has a rare ability to make readers form opinions, assumptions, and biases about characters, only to shatter those very perceptions with perfectly timed revelations. That emotional manipulation is what makes the twists hit even harder.
Blending psychology, crime, and scientific intrigue, this book is more than a thriller—it’s a mind-bending journey into human vulnerability, trauma, and the darkest corners of the conscience.

[Aliya · Rating 5 out of 5]

I recently finished reading Mumbai Experiment by Dhaval Birajdar, and honestly, it took me by surprise. From the very first page, I was drawn into the protagonist John’s world a police officer torn between his duty, emotions, and the haunting weight of his dreams. What begins as a story about relationships and inner conflict soon unfolds into something much deeper, touching on loneliness, moral struggles, and the thin line between reality and illusion.

The writing feels incredibly real. I could almost smell the rain, hear the honking on Mumbai’s busy streets, and feel the emotional exhaustion of a cop’s daily life. The bond between John and his mother is so beautifully written warm, witty, and deeply emotional. The introduction of Kamble adds a relatable human touch, showing how respect and kindness can exist even in rigid systems.

As the story progresses toward the murder in Powai, the tone shifts from emotional to suspenseful. It’s not just another crime scene it’s layered with tension, rivalry, and introspection. I loved how the author didn’t rush anything; the pace is steady, the atmosphere rich, and the details beautifully cinematic.

What impressed me most is how Mumbai itself becomes a character alive, chaotic, and full of contrasts. The author’s descriptions make you feel the city’s pulse.

Overall, Mumbai Experiment is not just a crime thriller it’s an emotional journey about people, choices, and the experiments life puts us through every single day. I’d recommend it to anyone who enjoys introspective stories with strong emotions and a touch of mystery.

[kriti · Rating 4 out of 5]

I finally picked up Mumbaii Expeeriment and wow… this one grabbed me faster than a Mumbai local at peak hour. From page one, the tension is thick dark alleys, shady secrets, sudden violence lurking everywhere. It’s the kind of book where you keep saying “just one more chapter” until you realise it’s 3 AM and you’re too hooked to stop.

The best part for me? The city. Mumbai isn’t just a backdrop here it’s a full-fledged character. The crowds, the chaos, the underbelly that nobody talks about… every scene feels alive and uncomfortably real. There’s a moral ambiguity in the storytelling that makes the thriller feel grounded, like this could be happening just around the corner.

The characters are flawed and messy, constantly making you question their motives. Sometimes you want to root for them, sometimes you want to shake them exactly what a good crime thriller should do. Yes, a couple of twists felt like I’d seen versions of them before, and the middle did slow down a bit. But then the story hits the accelerator again and that final stretch? Totally worth the ride.
Mumbaii Expeeriment may not reinvent the genre, but it delivers exactly what I picked it up for an engaging, atmospheric thriller that pulls you right into the beating heart of Mumbai. I read it. I loved it. And now I need something just as gripping to recover from this adrenaline rush.
4/5 #bookstagram #booksbooksbooks #mumbaikar

[Read_with_rimi · Rating 4 out of 5]

Mumbaii Expeeriment by Dhaval Birajdar is a crime thriller that hooks you from the very beginning and keeps you engaged until the very end.

The story begins with John, an inspector in Powai, Mumbai, who lives a peaceful, routine life. However, everything turns chaotic when dead bodies start appearing one after another. As these murders begin to connect with his past, the case becomes increasingly intense and confusing for him.

The story is fast-paced, and the way the author presents it makes it nearly impossible to put the book down and take a breather. The narrative progresses steadily, building tension and intensity without revealing the core suspense too early. You’ll find yourself constantly guessing, suspecting every character which, in my opinion, is one of the best qualities of a thriller.

The story also focuses deeply on John’s character: how his life turns upside down, how he begins to lose peace both at home and at work, yet remains determined to resolve everything. His character development is touching, and his realization at the end that while the past will always remain, there are still possibilities for healing in the future, is beautifully portrayed.

Lastly, I enjoyed this thriller not only for its suspense but also for its emotional depth. If you enjoy a gripping murder mystery with complex characters and an unpredictable plot, you should definitely pick up this book and give it a read.

[Swapna Peri ( Book Reviews Cafe ) · Rating 4 out of 5]

"Mumbaii Expeeriment" by Dhaval Birajdar feels like stepping into Mumbai after midnight—when the noise fades, the shadows stretch, and the real stories come out. The book follows Inspector John, a man trying to keep his personal life from falling apart while he chases a dangerous killer targeting mechanical engineers. His struggle feels real, his fear feels close, and his determination pulls you right into the heart of the investigation.

The city plays a huge role here. Mumbai isn’t just a backdrop—it reacts, hides, reveals, and surprises. Its crowded streets, sudden silences, and unpredictable energy shape the story as much as any character. With each turn, the mystery grows deeper, and the pressure on John intensifies in a way that keeps you turning the pages.

Dhaval Birajdar balances the crime, the emotion, and the pace beautifully. The murders are unsettling, the clues are smartly placed, and the characters feel alive and flawed in all the right ways. Beneath the tension, the book also looks at what it means to survive, to hope, and to keep going in a city that can lift you up one moment and break you the next.

If you enjoy suspenseful, character-driven thrillers that feel honest and grounded, "Mumbaii Expeeriment" delivers a gripping experience without losing its heart. It’s raw, engaging, and leaves you thinking long after you close the book.

[Sonia · Rating 4 out of 5]

"Mumbaii Expeeriment" is a gripping psychological crime thriller by author Dhaval Birajdar that blends themes of ambition, human desires, survival, and mystery.

As the novel begins, we are introduced to Inspector John, who starts investigating the brutal murder of a man named Ankit Ajmera, whose body is found in a gutter near the Jain temple in Powai, Mumbai. From the moment John sees the dead body, something bothers him, a hidden truth that he can sense but cannot quite grasp. As he works on solving the murder mystery along with other officers, they receive news of another murder committed in the same pattern, and then another. All the victims are mechanical engineers. What motive could be behind these murders? As you read further, you will uncover more details.

The narration is well-paced and frequently shifts between the present and John’s past. I appreciate the author for John’s character development. John is entangled in personal life problems and professional pressure, yet he remains determined to work hard and solve the investigation.

The story beautifully captures the essence of Mumbai. If you notice the title of the book, it is spelled differently, and once you complete the book, you will realize the reason behind it.

If you enjoy reading unpredictable crime thrillers that hold your interest until the very end, this book is definitely worth reading.

[Bookworm · Rating 5 out of 5]

Mumbai Experiment is a sharp and pulse-pounding crime thriller that plunges you straight into a world of secrecy, investigation, and human complexity. In the very first chapter, the book grabs you by the throat and doesn't let you go it moves quickly, there are twists you don't see coming, and there's an emotional weight you'll feel long after you've turned the final page and closed the book.

What sets this novel apart from others is Birajdar's ability to weave together crime alongside the psychological aspect not just what happens, but the reason people make the decisions they do. The inspector at the center of the narrative is so well-drawn flawed, determined, and stoking the flames of reality. You feel for the moral dilemma he faces throughout, in a story with many complex suspects, that has your wheels turning the whole ride.

Beyond the story, the city of Mumbai comes alive in its pages, and is so much more than a setting. It is maddening, unpredictable, and shapes every twist and turn of the narrative.

Mumbai Experiment cements Dhaval Birajdar as a writer to watch, Inspector John feels like a character who will eventually have many more stories to share.

[Ruqaiyya Mohammed · Rating 5 out of 5]

"Mumbai Experiment" by Dhaval Birajdar is a gripping narrative that explores the complexities of life in Mumbai. The title itself is intriguing, hinting at the experimental nature of the story. The book's cover art, featuring the iconic Bandra-Worli Sea Link, sets the tone for a tale that delves into the city's vibrant culture and the human experiences that shape it.

As the story unfolds, Birajdar masterfully weaves together themes of identity, community, and social commentary. The author's writing is engaging, and the characters are well-developed, making it easy to become invested in their journeys. The Mumbai Experiment is a thought-provoking read that challenges readers to reflect on the city's dynamics and the human condition.

While the exact plot is unknown, the title and cover suggest a narrative that is both experimental and rooted in the city's unique energy. Overall, "Mumbai Experiment" is a compelling read that is sure to resonate with anyone familiar with the city's rhythms and contradictions. Birajdar's work is a must-read for those interested in contemporary Indian literature and the Mumbai experience.

[Shifali · Rating 5 out of 5]

"Mumbaii Expeeriment" is a police procedural thriller that will keep you glued to your chair. Not only does it provide thrills, but it also has enough theatrical flare to allow you to associate and relate to the characters.

What begins as a regular investigation for Inspector John quickly develops into a sequence of gruesome homicides, each more horrible than the last one. But the true shock is not simply the gore, but the terrible realisation that the victims are connected to John's own past.

But the bodies keep piling in, and John has to race against the clock to catch the culprit while dealing with internal department politics, his failing domestic sanctuary, and his past that is gradually blending into his present. Will he be able to straighten his life out amidst the various storms that are all rushing towards him?

Birajdar writes with the assurance of someone who is not just reporting events, but also directing an experience. Every chapter is like a sealed doorway to a new dimension—mysterious, emotional, even unsettling, but always irresistible.

Overall, a commendable read.

[The_reading_soul · Rating 4 out of 5]

I dived into *Mumbaii Expeeriment* with high hopes and I’m glad it delivered on tension and atmosphere. The story grips you right from the start Mumbai’s dark alleys, sudden violence, and the kind of suspense that keeps you turning pages even when your mind says “maybe go to sleep.” What stood out for me was how the city itself becomes a character a buzzing backdrop of crime and moral ambiguity, which made the thriller feel grounded.

The characters are flawed, real, and often confusing which is exactly what you want in a story about suspense and drama. At times the plot felt a little familiar—some twists you might see coming but the execution kept me hooked. The pacing occasionally faltered mid-way, leaving a few moments where I caught my breath, but the final act pulled everything together in a satisfying rush.

If you’re into crime thrillers that feel alive and a bit gritty, *Mumbaii Experiment* is worth picking up. It’s not perfect, but it definitely entertained me when I needed a good suspense ride.

[Amreen Shaikh · Rating 4 out of 5]

"The Mumbai Experiment" by Dhaval Birajdar is a gripping crime thriller that immerses readers in a tense investigation set against the vibrant and sometimes dark backdrop of Mumbai. The narrative follows Inspector John and his team as they tackle a disturbing series of murders targeting mechanical engineers. The story is marked by a sharp, suspenseful pace and features layered characters that provide insight into their motivations and decisions.

Mumbai itself plays a crucial role in the plot, almost acting as a character that shapes the story's twists and turns. As the protagonist navigates personal and professional challenges, the investigation raises moral complexities and psychological depth, leading to an engaging narrative full of emotional weight. The clever twist connecting the murders adds an extra layer of intrigue, ensuring that the story is as thought-provoking as it is thrilling.

[Read With Her]

A Science and Suspense Thriller Which Bends the Mind in the best way.

This novel is a great mix of psychological tension and interesting scientific ideas that qualify it as a masterpiece in the field of thriller. Their characters are complicated and imperfect, and their motives are gradually disintegrating with the chilling plot. Elements of science are well-researched and smoothly integrated into the narrative and create an additional depth, without any sense of overload.

The timing is right and the suspense is created gradually but with some sudden twists throughout, this makes me sit on the edge of my seat. This is not merely a thriller; the author is able to delve into the human state and explore its weaknesses and strengths, and in the process one is able to think of what moves us.

This book will not disappoint you in case you are a fan of thrillers that make your brain work and your heart beat!

[Komal Kumari · Rating 5 out of 5]

📖 Book Review 📖

Book Review – Mumbaii Expeeriment by Dhaval Birajdar

Dhaval Birajdar’s Mumbaii Expeeriment pulls us straight into a world where crime, emotion, and mystery collide. From the very first page, we find ourselves walking beside John and his team, feeling every ounce of fatigue, fear, and determination they endure. The author’s writing grips us tightly — we can almost hear the rain-soaked streets, smell the damp air, and sense the unease at every crime scene. The story isn’t just about solving murders; it’s about facing inner demons, unspoken guilt, and human fragility.

We journey with John, torn between his duty and the haunting memories that blur his judgment. The flashback sequences — especially those with Priya — give us a rare glimpse into his softer side, adding depth to his otherwise stoic character. The pacing keeps us hooked; the tension rises like a steady heartbeat, and we can’t help but turn each page faster. The writing style is cinematic — visual, intense, and emotionally raw. What truly stands out is how the story blends crime investigation with personal struggle, making us reflect on what obsession and ambition can cost a person.

By the end, we’re left not just with answers but with questions about morality, passion, and fate. It’s more than a crime thriller — it’s a psychological dive into the mind of a man who’s seen too much yet can’t look away.

Why you should read this book:

A gripping blend of crime, mystery, and emotional depth.

Realistic characters who stay with us long after we close the book.

Vivid writing that makes Mumbai itself feel alive and breathing.

A perfect pick for readers who love thrillers with a human touch.

Rating: 5/5
Happy Reading 📚

[sahaneeya · Rating 4 out of 5]

"Mumbaii Experiment" by Dhaval Birajdar is a crime thriller that intertwines science and psychology with an amazing storyline. From the very beginning,  the author drew me into a world where flawed, relatable characters revealing secrets at the right moments in the story, making the book more interesting and giving it an emotional depth without ever feeling like too much. The novel’s scientific elements are effortlessly added in, adding to rather than distracting from the main storyline, while the pacing is good enough to keep me engaged the surprising twists and an extra charm. Birajdar’s writing is really nice and creates a sense of tension through his writing. Each chapter makes us reflect, not just on the tiny details of the crime but also on the complexities of human nature. I would recommend this book to those readers who want their thrillers to challenge both the mind and the heart.

[Scube Scoop · Rating 5 out of 5]

Dhavalbirajdar immediately plunges the reader into a taut, character-driven thriller from the first pages of The Mumbai Experiment. The prologue, full of character personal conflict and fear of loss, starts off with close intimate narration in order to establish emotional vulnerabilities before jumping abruptly into a high-stakes crime drama.
Inspector Kamat, a seasoned yet emotionally guarded police officer negotiating the frenetic din of Powai, Mumbai. The detection of a murder very quickly anchors the story in an appealing police procedural. The author does a great job with crisp dialogue and the nuances of the relationship between Kamat and his younger, keen colleagues, Sumit and Radhika. The pages promise that this is not a crime novel of whodunit twists but of the desperate psychic burden and ceaseless mental toil of the investigation. This glimpse suggests a thrillingly complex thriller that revolves around justice and moral ambiguity.

[Pardeep Khatri · Rating 5 out of 5]

A Crime Story That Leaves You Questioning What’s Right

Reading this felt like being pulled into a maze where every turn challenges what you believe about justice and morality. Dhaval Birajdar writes flawed characters with such honesty that you’ll find yourself supporting them even when you’re unsure if they deserve it.

The plot unfolds like a chain reaction—one secret exposes another, until everything explodes in the most shocking way. The balance of suspense, emotion, and scientific intrigue is perfect. The tension rises with every chapter, but the quiet moments—where the characters confront their fears—are the ones that truly stay with you.

By the end, I wasn’t just amazed by the thriller elements; I felt emotionally exhausted in the best way. This book proves that crime isn’t just about criminals—it’s about consequences, and how the past never really dies. Absolutely recommended.

[Ashley · Rating 5 out of 5]

A Deep Dive Into The Human Mind – Unforgettable

From the very first chapter, Mumbaii Expeeriment pulls you into a world where fear, guilt, and science collide in the most unpredictable ways. Inspector John isn’t your typical crime hero—he’s broken in places he refuses to acknowledge, and watching those weaknesses surface through the murders tied to his past is emotionally gripping.

What I loved most was how Mumbai becomes a living character—its crowded lanes, neon chaos, and hidden darkness shape every decision and every twist. The scientific elements are clever and haunting, making you question how far humans can go in the name of progress.

Each revelation made me pause and think, and that ending… it hit like a punch to the chest. It’s not just a thriller; it’s a psychological mirror. I closed the book still hearing the echoes of the choices the characters made. A must-read for anyone who loves stories that linger long after the final page.

[Saleem Sheikh · Rating 5 out of 5]

Mumbaii Expeeriment is a crime thriller that took me right into the dark corners of Mumbai. Dhaval Birajdar builds the story with care and tension, showing how power, greed, and human emotion mix to create chaos. The city feels alive in every scene, with its busy streets, hidden secrets, and restless energy.

The story begins with curiosity and slowly turns into a deep web of mystery. The author keeps the reader guessing, and the pace never drops. What makes the book special is that it does not depend only on crime or suspense. It also explores the emotions of the people caught in it. Their fears, their hopes, and their choices make them feel real. The writing is clear, and the twists come naturally.

By the end, you feel like you have seen Mumbai from both sides, the shining and the broken. It is a story that keeps you thinking about what truth really means in a world full of lies.

[Pradeep · Rating 5 out of 5]

This book captures Mumbai in a way very few stories do. Mumbaii Expeeriment is thrilling, emotional, and full of surprises. Dhaval Birajdar writes with a storyteller’s instinct. He knows when to build pressure and when to let the reader breathe. The crime angle is strong, but the emotions are even stronger.

The characters are well crafted. Each one has their own story, and you can feel their struggle between right and wrong. The way their paths connect adds richness to the plot. The language is easy, but the depth is impressive. The author also brings out the social side of the city. the divide between luxury and poverty, between ambition and survival.

The book does a great job of showing that crime does not happen in isolation. It grows from human desires and the choices people make when pushed to the edge. That idea gives the story meaning beyond just suspense.

[Natasha Agarwal · Rating 5 out of 5]

This thriller is a masterclass in suspense!

It hooks you from page one, blending science and psychology in a way that keeps you guessing till the end. The characters are flawed, real, and relatable, with secrets that unravel at just the right pace, making it impossible to put down.

The scientific elements are woven in seamlessly, adding depth without overwhelming the plot. Twists and turns keep you on the edge, leading to a finale that's both surprising and thought-provoking. The writing is tight, the pacing is expertly handled, and the atmosphere is tense and immersive.

By the end, you'll be breathless and reflecting on the complexities of human nature. If you're a fan of thrillers that challenge your mind and keep your pulse racing, this one is an absolute must-read. You'll be thinking about it long after you finish!

[Oishani Sarkar · Rating 5 out of 5]

Mumbaii Expeeriment is written by Dhaval Birajdar and it is a crime thriller novel with lots of mystery, twists and turn, suspense, etc.

This isn't just a murder mystery; it's a gripping and gory tale of a series of brutal murders in Mumbai. It is a mid-length book and begins as a homicide case but goes deep into a personal and complex chase.

All the characters are well penned, with some interesting plot lines and emotional rollercoasters. I love how it not just goes on with crimes but dwells deeper into the psychology of this inhuman motivation. All the violent descriptions are quite gory, so not for everyone.

Storytelling is quite well balanced and engaging as well. This book is definitely for readers who love reading crime fiction with a psychological depth. Overall recommended.

[Bambam Kumar · Rating 5 out of 5]

Dhaval Birajdar writes in a way that keeps you curious. His words flow easily, and he paints Mumbai as more than just a backdrop. It becomes a living part of the story. The characters have depth and each of them carries their own secrets. Some moments make you stop and think about how one decision can change everything.

What stands out most is how the book mix crimes with emotion. It's not only about solving a case but also about people, their mistakes, and the unseen side of ambition. The mix of drama and suspense keeps you hooked till the final page.

Mumbaii Expeeriment is a strong and engaging read for anyone who enjoys stories that feel raw and real. It leaves you thinking about the choices people make and the city that hides a hundred stories behind every light.