The sanctum key

by Sudharsana

For two thousand years, two secret societies have fought to control the Sanctum Key, a source of unimaginable power. One seeks to unleash its dangerous secrets, while the other will stop at nothing to keep it hidden.
When a highstakes experiment at the Satyendra Nath Bose Energy Research Center goes disastrously wrong, a group of unlikely heroes must race against time to stop a disaster that could tear the world apart.
Meanwhile, a forgotten genius in the past uncovers a deadly secret that could save or doom humanity. As the boundaries between myth and reality blur, only one question Can the Sanctum Key's power be controlled, or will it destroy everything?

280 pages, Kindle Edition

Published January 18, 2025

Reviews

[Rahul Vishnoi · Rating 5 out of 5]

-A Thriller With Historical, Royal & Scientific Angles-
Review of 'The Sanctum Key'

Quote Alert
"𝐓𝐡𝐞 𝐒𝐚𝐠𝐞 𝐥𝐞𝐚𝐧𝐞𝐝 𝐛𝐚𝐜𝐤, 𝐚 𝐠𝐥𝐢𝐦𝐦𝐞𝐫 𝐨𝐟 𝐝𝐞𝐟𝐢𝐚𝐧𝐜𝐞 𝐬𝐩𝐚𝐫𝐤𝐢𝐧𝐠 𝐢𝐧 𝐡𝐢𝐬 𝐞𝐲𝐞𝐬 𝐚𝐬 𝐚 𝐝𝐫𝐲 𝐜𝐡𝐮𝐜𝐤𝐥𝐞 𝐞𝐬𝐜𝐚𝐩𝐞𝐝 𝐡𝐢𝐬 𝐥𝐢𝐩𝐬."𝐖𝐡𝐞𝐧 𝐡𝐚𝐬 𝐩𝐞𝐚𝐜𝐞 𝐞𝐯𝐞𝐫 𝐝𝐫𝐢𝐯𝐞𝐧 𝐫𝐞𝐚𝐥 𝐜𝐡𝐚𝐧𝐠𝐞?" 𝐇𝐢𝐬 𝐭𝐨𝐧𝐞 𝐜𝐚𝐫𝐫𝐢𝐞𝐝 𝐚 𝐬𝐡𝐚𝐫𝐩, 𝐚𝐥𝐦𝐨𝐬𝐭 𝐦𝐨𝐜𝐤𝐢𝐧𝐠 𝐞𝐝𝐠𝐞 𝐚𝐬 𝐢𝐟 𝐭𝐡𝐞 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧 𝐰𝐚𝐬 𝐚𝐧 𝐢𝐧𝐝𝐢𝐜𝐭𝐦𝐞𝐧𝐭 𝐨𝐟 𝐧𝐚𝐢𝐯𝐞𝐭𝐲. 𝐇𝐞 𝐝𝐢𝐝𝐧'𝐭 𝐰𝐚𝐢𝐭 𝐟𝐨𝐫 𝐚 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐞; 𝐡𝐢𝐬 𝐯𝐨𝐢𝐜𝐞 𝐠𝐫𝐞𝐰 𝐛𝐨𝐥𝐝𝐞𝐫, 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐜𝐚𝐥𝐦 𝐟𝐚ç𝐚𝐝𝐞 𝐠𝐚𝐯𝐞 𝐰𝐚𝐲 𝐭𝐨 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐟𝐢𝐞𝐫𝐜𝐞𝐫. "𝐁𝐞𝐥𝐢𝐞𝐟𝐬, 𝐫𝐞𝐥𝐢𝐠𝐢𝐨𝐧𝐬, 𝐩𝐫𝐢𝐧𝐜𝐢𝐩𝐥𝐞𝐬-𝐭𝐡𝐞𝐲 𝐚𝐥𝐥 𝐬𝐩𝐫𝐞𝐚𝐝 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐭𝐡𝐞 𝐟𝐢𝐫𝐞𝐬 𝐨𝐟 𝐭𝐮𝐫𝐦𝐨𝐢𝐥, 𝐧𝐨𝐭 𝐭𝐡𝐞 𝐰𝐡𝐢𝐬𝐩𝐞𝐫𝐬 𝐨𝐟 𝐜𝐚𝐥𝐦."

Why Must You Read?
-A Thriller with Historical, Royal & Scientific Roots
-Time leaps that makes reading interesting and breaks the monotony

A mysterious explosion, a nuclear facility, a house that has disappeared and friends investigating the going-ons. Now if this isn't a fodder for a bestseller, I don't know what is! The Sanctum Key by Sudharsana is a thrilling experience with a three pronged leap in time. With references and active participation of eminent historical personalities, the author grounds her story deep into the reality. This tether that provides a historical, royal as well as scientific connection to the story is a masterstroke by the author. Having real people as refrence points in a thriller is something that will root it into a recognisable corner in reader's mind, thereby giving it an authenticity that is hard to beat.

So what is it about? Sanjay and Ayush are goofing around in a small township of Naliya in Gujarat, chasing girls and doing what boys do what their town is jolted with an uncanny explosion that leads to people going unconscious. As they move around, they discover that an entire house has disappeared. Meanwhile, strangers have descended upon the town, harbouring secret agendas. As the story moves, it also jumps and shows us two very intresting characters that are part of the story: the first is the legendary scientist Satyendra nath Bose (check out for a line in the story where a character asks why he didn't get a Nobel) and the second is none other than the great king Ashoka himself. But how has author inducted them both and even made a reference to Oppenheimer in a letter? Well I am not going to tell you everything here. Get the book to find out more.

The author hasn't hurried the story, choosing to set it at a reasonable pace. I like how she lets life seep out from the story, drenching the reader slowly with hner words and introducing the nuances of the characters in her own time. She skillfully sets the characters up, pushing them into twists and turns slowly but surely. I also like how she has created dread through dialogues. Have a look:
'"Ayush..." Sanjay looked at him with concern."Do you know what were dealing with? There's a real possibility that we can't find Shreya and her father. You understand that, right?" He pointed to the chaotic display of papers and digital screens in front of them."Look at this. It's like they never even existed!"'

Since the story keeps on leaping back and forth in time, we see different characters interacting with one another. This breaks the monotony and provides a refreshing cleanse to readers' palate.
The author exerts a tight control on the elements of the story, balancing pace with the emotions, walking a tight rope of keeping reader's interest in the story while helping the main characters evolve at a comfortable pace.

It's also a pleasure to read the story when the authors inculcate their own beliefs and philosophies into the writing without it hindering the narrative. Sudharsana has done that effortlessly.
Have a look:
"The Sage leaned back, a glimmer of defiance sparking in his eyes as a dry chuckle escaped his lips. "When has peace ever driven real change?" His tone carried a sharp, almost mocking edge as if the question was an indictment of naivety. He didn't wait for a response; his voice grew bolder, and the calm façade gave way to something fiercer. "Beliefs, religions, principles-they all spread through the fires of turmoil, not the whispers of calm."

I absolutely loved this multi-pronged experience. You will love it too. Pick it up this festive season.

[Bestbookhunter · Rating 5 out of 5]

This book is about a mysterious, suspenseful and absorbing saga. A fantastic blend of science, mythology and historical fiction. Reading this book was an immersive experience as it takes us into a fascinating world where everything seems fine for now, but anything could go wrong at any given minute. A suspenseful narrative around a mysterious fictional world is weaved so beautifully, full of unusual stillness, and chaos at the same time.The exciting characters and their actions creates an urgency in the storytelling and keep us on the edge throughout the book to dive deeper into it. Firstly that blast which shook the township. Then after, an entire house vanish as if it never existed! Sanjay and Ayush embark on quest to find shreya and her father anyhow? Is there something bigger cooking?

In the beginning, the readers may find it difficult to connect the dots as different timelines and parallel narrative are weaved which comes together in the climax to create more suspense and leaves us unanswered. We will have to wait for the second title in this series.The dialogue and interactions feel realistic, making the relationships between characters meaningful and engaging. Overall, this book is a thought-provoking and exciting read. A must read if you love to read science fiction, thriller or fantasy.

Book : The Sanctum Key
Author : Sudharsana
Genre : #sciencefiction 
Rating : 4.8/5

[Shifali B · Rating 5 out of 5]

Sanctum key is all about the possibilities of science that surpass time and age. It takes us on a tour of the world created by modern technology, rich in physics, atomic energy, and cosmology.

Sanjay woke up one day in the hospital after a malfunction at the Dr Satyendra Nath Bose lab. After he was discharged, his friend Ayush went with him. He was in love with Shreya, and when he took Sanjay to see her house, he was shocked to find that the house was gone and no one remembered her. This unfolded many other things, like who & what else was missing and how it was possible.

On the other hand, Kamla and Madhusooshanan and their son Kulashekaran, in another timeline, were going to uncover a deadly secret that is the key to either saving or destroying mankind. One group is attempting to obtain the key, while another is trying to destroy it. Who will succeed?

The scientific elements, especially the research facility and its experiments, add realism and depth. The alternating timelines add suspense by gradually revealing clues. Although some sections necessitate careful reading to comprehend the intricate details, the writing style is engaging.

While the multiple timelines and characters can be a bit overwhelming, the author does a great job tying everything together. This book is worth reading if you enjoy stories that blur the line between science and myth, adventure and puzzles.

[readers creators · Rating 4 out of 5]

What a splendid combination of Time Transition, Science, and Myth! This is a really suspenseful story that will indulge you from the very first incident. I love the writing and storytelling on the author’s part, and I love the amalgamation of genres that brought out a hooking story.

Sanjay woke up one day in the hospital, after a malfunction at the Dr. Satyendra Nath Bose lab. His friend Ayush accompanied him after discharge, he was smitten with a girl Shreya and when he took Sanjay to show her house, he was shocked to see the house was missing and no one remembers her. This unfolded many other things like who & what else was missing and how is it possible.

On the other hand, Kamla and Madhusooshanan and their son Kulashekaran, in another timeline, were going to uncover a deadly secret that is the key to either saving or destroying mankind. One group is trying to get hold of that key and another is trying to destroy it. Who will succeed? The story will make you ponder beyond what you are familiar with.

It’s quite an adventurous book, which will no doubt keep you hooked and eager to solve the mystery, but at the same time, it eagerly demands concentration while reading. Too many characters and switching between timelines can confuse a reader profoundly. I enjoyed reading it, but it was also exhausting for me. Overall, will recommend it if you a fan of mystery, adventure, and solving puzzles. There are too many characters, but the author did a great part in developing a very individual personality for all of them.

[Treesa Cherian · Rating 5 out of 5]

Sanctum key is all about the possibilities of science that surpasses time and age. Rich with profound knowledge in physics, atomic energy and cosmology, it takes us a tour into the world devised by modern technology. This is much beyond an ordinary man's perception as it deftly blends the mythology, ancient history into modern science. The characters Sanjay and Ayush represents us, the layman who seek answers to some pertinent, questions. We get to more details about the scientific expedition that can be catastrophic to the humanity. It all began with their journey to find Shreya, Ayush's love interest.

The spectrum dish, laboratory, the way water shields them from losing their memory, all serves us the possibly best comprehensive sci-fi novel. The tension or alertness simmers in each chapter, that we eagerly embark on that adventerous expedition with the boys. The reference of Oppenheimer, King Ashoka and his reign, different Yugas make it even more awe-inspiring.

In every way, this novel is a testimony to the far reach of physics and technology, that have the potiential to overcome all the obstacles of time and space. Incorporation of Schrödinger cat theory and grandfather paradox made it even more enriching.

A must read novel for science fiction enthusiasts. Incredible work!!

[CP · Rating 5 out of 5]

Sanctum is a gripping blend of science, history, and mystery that keeps you hooked from the first chapter. The story jumps between timelines—one following a group of scientists dealing with a failed experiment, the other exploring an ancient secret that could save or destroy humanity. The stakes are high, the suspense is real, and the twists are unexpected.

The characters feel real, especially Sanjay and his friends, whose humor adds lightness to the tension. Kulashekaran’s journey in the past is beautifully written, and his admiration for Dr. Satyendra Nath Bose adds a charming touch. The mystery of the missing house and people vanishing keeps you turning pages.

While the multiple timelines and characters can be a bit overwhelming, the author does a great job tying everything together. If you love adventure, puzzles, and stories that blur the line between science and myth, this book is worth reading

[Theinnocentheart · Rating 4 out of 5]

The stakes are high from the very first page, and Sudharsana ensures that the tension never wavers. Each revelation adds another layer of complexity, making it difficult to put the book down. Twists arrive when least expected, keeping the reader engaged.

One of the most compelling aspects of The Sanctum Key is its philosophical depth. By exploring the intersection of science and the divine, the book raises thought-provoking questions about humanity’s pursuit of knowledge. Can we truly understand the essence of existence through science alone, or is there something beyond measurable reality?

The characters, especially the scientists and historians embroiled in the conflict, feel real and well-developed. Each has a distinct motivation, and their actions drive the plot forward in meaningful ways. The hidden genius from the past is particularly intriguing, adding an emotional weight to the mystery.

[Manasvini · Rating 4 out of 5]

The Sanctum Key is an ambitious novel that blends historical mystery with modern science. The story follows an ancient knowledge tied to a dangerous secret, unfolding through two interconnected timelines. Sudharsana does a great job building suspense, and the depth of research is evident in both the scientific and historical aspects. The novel shines in its ability to keep readers engaged with twists and revelations. However, the complexity of the dual timelines and the dense detail in some sections require careful reading. While a few characters could have been fleshed out more, the core protagonists are compelling, and their journey is thought-provoking. What stands out most is how the novel challenges readers to consider the ethical implications of knowledge and power. For those who enjoy intricate thrillers that make you think, this book is an engaging and rewarding read that leaves a lasting impression.

[Anonymous · Rating 5 out of 5]

The Sanctum Key: Picked on a Whim, Loved for the Ride.
I picked up The Sanctum Key on a whim, and I’m glad I did! It’s a fascinating blend of mystery, history, and science with an exciting plot that kept me turning the pages. The story follows an ancient secret that ties into modern-day events, and the way the two timelines unfold makes for a gripping read. There’s a bit of everything—action, suspense, and even some deep philosophical questions about knowledge and power. The characters are interesting, and I found myself rooting for them, even when the stakes got intense. Some parts were a little complex, especially with the scientific explanations, but overall, the book wasn’t too difficult to follow. It reminded me of National Treasure meets The Da Vinci Code—fun, intriguing, and just the right amount of mind-bending. If you like adventure novels that make you think, you’ll probably enjoy this one!

[A Zo · Rating 5 out of 5]

The Sanctum Key is an electrifying mix of science fiction and historical intrigue, offering a mind-bending journey across time. Sudharsana crafts a world where cutting-edge technology collides with ancient secrets, creating a fast-paced, intelligent thriller. The book’s biggest strength is its concept—the idea that knowledge, if misused, can have catastrophic consequences. The scientific elements, especially the research facility and its experiments, add realism and depth. The alternating timelines build suspense, revealing clues piece by piece. The writing style is engaging, though some sections require careful reading to keep track of the complex details. While the pacing varies, the payoff is worth it, especially as the connections between past and present come together. If you enjoy books that challenge your perception of history and science, this one delivers. It’s a gripping, high-stakes thriller that will leave you questioning what we really know about the world.

[Kshitij Bajpai · Rating 5 out of 5]

The Sanctum Key by Sudharsana is a riveting blend of science fiction, mythology, and historical intrigue that keeps you guessing till the end.
The story unfolds across timelines, following a high-stakes scientific experiment gone wrong and an ancient mystery linked to a powerful artifact—the Sanctum Key.
Two secret societies battle over its secrets, one seeking to unleash its power, the other sworn to protect it. With mysterious disappearances, explosive twists, and philosophical depth, the narrative expertly merges cutting-edge science with ancient wisdom.
While the shifting timelines may initially challenge the reader, they converge masterfully by the climax, heightening the suspense.
The characters are realistic and compelling, making the stakes feel personal. Sudharsana's storytelling is both intelligent and immersive, creating a thought-provoking exploration of science, belief, and human ambition.
A must-read for fans of sci-fi thrillers and layered mysteries.

[Manu · Rating 4 out of 5]

Sudharsana’s The Sanctum Key is a gripping blend of science fiction, historical intrigue, and philosophical exploration. At its heart, the novel revolves around an ancient battle between two secret societies, each with opposing ideologies about the Sanctum Key—an artifact of unfathomable power.

As a catastrophic scientific experiment goes wrong in the modern world, and a forgotten genius from the past unearths a dangerous truth, the novel weaves a dual timeline narrative that keeps readers hooked.

The novel masterfully shifts between the present and the past, creating a layered and immersive experience. The modern storyline, centered around a failed experiment at the Satyendra Nath Bose Energy Research Center, adds a strong scientific backbone. Meanwhile, the historical arc provides depth, grounding the narrative in real-world mysteries and legends.

[Deepak · Rating 5 out of 5]

"The Sanctum Key: A Glimpse of God from the Shoulders of Science" by Sudharsana is a captivating blend of mystery, science fiction, and ancient history. The story revolves around two secret societies fighting to control the Sanctum Key, a source of unimaginable power.

As the plot unfolds, a group of unlikely heroes must navigate a complex web of science, mythology, and ancient secrets to prevent a disaster that could destroy the world. Along the way, they discover hidden truths about the past and the true nature of the Sanctum Key.

Sudharsana's writing is engaging, and her unique blend of science and mythology creates a thrilling narrative that keeps readers on the edge of their seats. With its intricate plot and thought-provoking themes, "The Sanctum Key" is a must-read for fans of science fiction and mystery.

[Shubhshree Mathur · Rating 4 out of 5]

If you love mysteries with layers of hidden secrets, The Sanctum Key is a must-read. Sudharsana crafts a thrilling story that jumps between past and present, revealing an ancient knowledge that holds immense power. The book has an engaging mix of historical intrigue and modern science, keeping readers hooked with unexpected twists. The characters are well-developed, and their motivations make the stakes feel real. The pacing is smooth, and the way the two timelines connect is especially satisfying. Some parts are dense with details, especially the scientific sections, but they add depth to the story rather than slowing it down. What makes this book special is how it blurs the line between fact and fiction, leaving you wondering what could be real. If you enjoy intelligent thrillers like The Da Vinci Code, this book is right up your alley. It’s an exciting, thought-provoking adventure!

[Ajit Somani · Rating 4 out of 5]

One of the strongest aspects is the way you use small but significant details—the watch in the mud, the missing security footage, the house that never existed—to build suspense. These elements make the mystery feel almost supernatural while still grounded in a believable reality.

If there’s any room for improvement, it would be in tightening some dialogue to make it even sharper and more impactful. Some lines could be more concise to keep the tension high. Additionally, a little more internal conflict or emotional depth from the characters—especially regarding their personal stakes in the investigation—could make them even more relatable

[Friends Of Books · Rating 4 out of 5]

A mind-bending thriller that will keep you on the edge! Sanjay's search for a missing girl, Shreya, uncovers a complex web of secrets and mysterious events. As he delves deeper, he discovers that several people and objects have vanished into thin air.

The story takes a fascinating turn with parallel timelines, introducing Kamla and her family, who are on a perilous quest to uncover a deadly secret. With multiple plot twists and turns, this book is a true page-turner. The author's unique storytelling style and well-developed characters make this a must-read for fans of mystery, adventure, and puzzle-solving. Get ready for a thrilling ride that will keep you guessing until the very end!

[Kamla · Rating 5 out of 5]

The pacing is well-balanced, shifting smoothly between the official investigation led by Karnan and Muhammed and the secretive digital sleuthing by Sanjay and Ayush. This dual perspective adds depth, making the mystery feel layered and immersive. The characters are distinct, each with their own motivations—Karnan’s meticulous nature, Muhammed’s practicality, Sanjay’s persistence, and Ayush’s charm all stand out. Rukmini’s introduction adds another compelling dynamic, making it clear that multiple people are unknowingly chasing the same truth

[Paramita Mukherjee · Rating 4 out of 5]

Science, secrecy, friendship, and mystery - this is a superlative quality of highly engaging content. A sudden accident, a sudden disappearance, and a sudden discovery of a secret make for an enjoyable and thrilling pickup. There's a multitude of mysteries that need to be unraveled through scientific inquiry rather than relying on myths. Apart from the protagonist Sanjay, I liked all the other characters, including Ayush, Shreya, Karnan, Kamla, the old man, and everyone else. Each character represents a different facet of the story, interconnected with the others, making it a worthwhile read.

[Kriti Singh · Rating 5 out of 5]

This thriller story revolves around two ancient powers who wants to control The Sanctum Key which is a source of immense power. The secret of Sanctum Key is a double-edged sword it could be humanity's last hope or its ultimate downfall.It's a blend of historical mystery, scientific thriller, and adventure. How a failed experiment lead people to this mystery and they found themselves entangled in this. A searching hunt lead them to parallel universe and many more secrets of Sanctum Key and its power. This book is a must read mystery and thriller lovers.

[Tinu Somani · Rating 5 out of 5]

The book is full of suspense, with unexpected twists that make you want to keep reading. The characters feel real, especially Sanjay and his friends, who joke around even in serious moments. The writing is easy to follow, but there’s a sense of mystery that keeps you guessing.

If you like books with adventure, science, and secrets, Sanctum is a great read. It’s like solving a big puzzle, piece by piece. You’ll want to know what happens next until the very last page!

[Ayushi Singh · Rating 5 out of 5]

"The Sanctum Key" by Sudharshana is a story which gives you suspense, mysteries and thrills. A war between two ancient societies to obtain The Sanctum Key which comes in modern world by a failed experiment. The journey which began from finding a missing girl that lead them into parallel world and the mysteries unfold. This book gives you a surreal experience and you will like every part of this book. Had a great time reading it and would recommend it definitely to everyone.

[Akanksha · Rating 5 out of 5]

Picked it up thinking I’d read a few chapters before bed — ended up finishing the last 50 pages in one go.

The story pulls you in so naturally, and before you even realise it, you're completely immersed. It’s fast-paced, engaging, and full of little turns that keep you curious throughout. Nothing felt forced, nothing dragged.

And that ending — open in the best way.
I need part 2. Like, yesterday.

Absolutely worth the read.

[Garima · Rating 4 out of 5]

The Sanctum key by Sudharsana is an amazing blend of mythology and science. The story is gripping and fast paced. It was a refreshing read, felt like watching a movie. The scenes were described vividly and the plot twist was just mind blowing. This could be the next pick for science fiction and mystery enthusiasts.

[Ajju Somani · Rating 5 out of 5]

Sanctum is a thrilling mystery that keeps you hooked from the very first page. A story in a book follows Sanjay, who wakes up in a hospital feeling confused and weak. Something strange has happened—a research lab has malfunctioned, people have fainted, and no one seems to have clear answers. As Sanjay tries to understand what’s going on, he stumbles upon an even bigger mystery: his friend’s house has disappeared overnight, and no one remembers her!