Billion-Dollar Baby Shock: A Greek Billionaire Surprise Romance

by Abby Green

A reverse Jane the Virgin inspired romance featuring a baby shock, one hot night and a Greek billionaire by USA TODAY bestselling author Abby Green. 

First came baby… 
Now comes passion! 

After Tara discovered a fertility clinic mix-up made her a mother via surrogacy, she began desperately searching for the father, Dionysios Dimitriou. His wealth is no substitute for ensuring her child is loved. What she never expected? The masked stranger she spent last night with…was Dion! 

Dion is stunned, then distrustful when Tara claims Niko is hers. Although he needed an heir, he made sure his son wouldn't be abandoned like he was. However, seeing the way she adores Niko chips away at the guarded Greek’s defenses—threatening his resistance to their consuming connection… 

From Harlequin  Escape to exotic locations where passion knows no bounds.

Genres: Harlequin, Romance, Harlequin Presents

205 pages, Kindle Edition

Published August 26, 2025

About the author

Abby Green spent her teens reading Mills & Boon romances. She then spent many years working in the Film and TV industry as an Assistant Director. One day while standing outside an actor's trailer in the rain, she thought: "there has to be more than this". So she sent off a partial to Mills & Boon. After numerous rewrites, they accepted her first book and an author was born.
She lives in Dublin, Ireland and you can find out more here www.abby-green.com

Reviews

[Barbara · Rating 5 out of 5]

Tara and Dionysios/Dion Dimitriou and their son Niko. They meet after a fertility clinic mix-up that made her the Mother to his son. The story held my interesrt throughout. I found their story to be well worth reading. I received a copy of this book via Booksprout and am voluntarily leaving a review.

[Lucy · Rating 2 out of 5]

Sometimes Harlequin romances are hits and sometimes they're better served as kindling. And listen, this could have been great. The writing was decent and the plot and pacing were well done. The problem, the real crux of the book was the fact that the characters were absolutely trash. Tara would have been a fantastic character if she stood up to Dionysios/Dion. But she didn't, not really. He talked to her like she was flighty garbage, he treated her like a warm body to take his sexual advances and verbal abuse like he was entitled to it, and Tara just let it happen.

Dion didn't change. Throughout the entire 200 pages of this book, Dion persisted in accusing Tara of being one foot out the door (regardless of her words and actions) and actively tried to push her away from her child. He was a trash human being which is only made worse by the fact that he is also a man.

This wasn't good, which is a shame only for the fact that trees had to die for my impulsive thought to purchase this.

[Susan in Perthshire · Rating 2 out of 5]

Disappointing.

[Happily Ever After Romance · Rating 5 out of 5]

Reviewed at Happily Ever After Romance

Billion-Dollar Baby Shock packs a powerful emotional punch as Tara discovers that due to a life-changing mistake at a fertility clinic, she is the mother of a baby boy who is living with his father. This was not her planned future, but she cannot rest until she tracks down the man who has their son in his custody, to tell him the truth of what happened, yes, but also to find her son.

Dion has ensured that he has an heir, a little boy who will never feel the abandonment that Dion has felt. He is mistrustful of Tara, especially considering that they had spent a passionate night together as strangers. Showing up now, claiming that Niko is hers… suspicious. Yet, as he allows Tara to interact with Niko, he will begin to see another side to this mysterious stranger, a woman who is breaking down walls as quickly as he tries to erect them. Through technology and the mistake of a fertility clinic, they’ve created a new, innocent life… perhaps they can create a true family by choice.

I enjoyed Billion-Dollar Baby Shock so much. While perhaps not a story ripped from the headlines, I can certainly see how this situation could come about. I adored Tara’s family, giving Dion a taste of what a real, loving family could be. I liked this couple both individually and most definitely together. If you love a romance that is well-written, engaging, passionate, and delivers all the feels you could possibly desire, then you’d love Billion-Dollar Baby Shock by Abby Green.

*I received an e-ARC of this novel from the author or the author’s team via Booksprout, and I sincerely thank them for their trust. It is my choice to leave a review, giving my personal opinion about this book.*

[Julie · Rating 4 out of 5]

Abby Green hits it out of the park with her latest sensational Harlequin Presents novel, Billion-Dollar Baby Shock.

Finding out that a fertility clinic mix-up resulted in her becoming pregnant was shocking enough for Tara, but it looks there are more surprises headed her way when she discovers that the father of her child is Dionysius Dimitriou, the man she had spent a passionate night with. Compelled to tell Dion about the existence of his son, little does Tara realize that her life will never be the same ever again!

Abandoned as a child, Dion is not a man who trusts easily and he's initially suspicious when Tara tells him he's the father of her son. Yet, there's no denying how much Tara cares for their child - or that she has breached the defences he had erected around his heart!

Will their unexpected connection lead to a love that could last a lifetime? Or will their fears and insecurities result in Tara and Dion losing their final chance at happiness?

Abby Green is on top form with Billion-Dollar Baby Shock. A beguiling tale packed with passion, intensity and emotion, Billion-Dollar Baby Shock is a thrilling rollercoaster ride with a sexy Greek Alpha hero and a resilient and intelligent heroine readers will find hard to resist.

An absolute must for Harlequin Presents fans, Billion-Dollar Baby Shock is another winner by Abby Green!.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[BookSLoth · Rating 3 out of 5]

I'm on the fence with this one. The FMC was kinda pushy to start off with. She decided that her egg was accidentally used to create a child so she was going to go and bulldoze her way into is life because 'hey, it was mine first.' Let's not talk about legal rights or being a Ms. Judge McJudgerson about how someone raises a child.

So I have to get over that, which takes a bit for me. Then there the MMC who keeps putting forth this alpha-hole vibe with a Cinnabon aura (does that make any sense?!?) How can a girl not get mixed signals, let alone whiplash. Their relationship is a lot of push and pull, judging of each other, and making a possible okay EA.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Debdutch · Rating 5 out of 5]

“Billion Dollar Baby Shock” by Abby Green

-A gripping story about a unique fertility clinic mix-up that changes two lives forever. I received a free copy and am voluntarily sharing my honest thoughts.

Tara and Dion are thrown together as unexpected parents, their chemistry undeniable. They each have unique pain from childhood. Tara has close siblings that makeup her close family.

Through family, heartbreak, and passion, love grows where shock first began.

Abby Green delivers a timely, emotional, and unforgettable romance.

[Lisa H · Rating 4 out of 5]

Bonkers…

Tara has a super hot one night stand in Greece. She happens to be looking for the father of her baby, Dionysius. Oh, Tara happens to be a 25 year old virgin. But her egg was artificially inseminated with Dions sperm and they had a baby bus surrogate. After she meets Dion, she’s instantly no longer a virgin and hues from responsible good girl who raised her siblings to being deflowered with no exchange of names. It’s only the next morning she asks Dion who he is and she tells him she’s his baby mama.
Bonkers.

[Gillian Collins · Rating 2 out of 5]

Very little character development, no lust, minimal romance, plot which is very unbelievable. Neither character seemed to grow up during the story - Tara just kept taking the crap that Dion was throwing at her. She seemed to have no back bone at all, despite having raised all her siblings and we know she's a powerhouse. Dion only cared about himself the entire way through the book until the final few pages when the wind must have changed direction and he agreed to marry Tara. It's all just so unbelievable. I wasted precious reading hours on this.
Would not recommend

[Debbie Benson · Rating 4 out of 5]

I received a free copy of this book via Booksprout and am voluntarily leaving a review. I liked how a mix up at a fertility clinic leads to Tara and Dion becoming parents. Tara goes to find her son and meets Dion without realizing who he was. The chemistry is strong between them and it slowly becomes love. I liked how Tara and her family show Dion what family should be and that Tara, Dion and Nico become a family.

[Isha Coleman · Rating 4 out of 5]

Green breaks down the barriers of love, life and family with an unconventional journey to happily every after. From heartbreaking, to humorous, to tempting, Tara and Dion are one surprise after another. Billion Dollar Baby Shock is an inconveniently, tempestuous story of hope and heartache that brings out all the feels.

[BusyM3 · Rating 4 out of 5]

An enjoyable read. This is a new author for me and I am looking forward to reading more from them. This is the story of how a fertility clinic does a mix-up and brings Dion and Tara together and long with their son to become a family. The characters fit well together and have great chemistry.

I am voluntarily leaving a review.

[Rowena · Rating 4 out of 5]

A steamy must read! When she played for her future, Tara didn’t expect it to happen now. And when she discover who her baby daddy is, she gets more than she bargains as it turns out her one night stand will not be just that. I enjoyed the drama and delightful moments that brings this shocking storyline to become more as the characters deny their attraction.

[Mary · Rating 4 out of 5]

This is an escape to exotic locations story about Tara, Dionysios/Dion and Nico, their surprise son. This is an interesting twist on surprise pregnancy and wealthy man needing an heir. I enjoyed the story and how it developed. It was different, which was a nice change. I liked the characters, the family and the emotional aspects of the story.

[Amanda · Rating 5 out of 5]

A very cute story. I didn’t want to put it down.

[sierra]

dnf @ 72%

i’m just not having fun with this one 😕

[Meredith · Rating 4 out of 5]

52 book club challenge 2026 - a book that cost me nothing (library)
pop sugar reading challenge 2026 - a book about postpartum; a book with a character who navigates infertility

[st23 · Rating 3 out of 5]

Mixed Feelings, but a Breezy Read
Review without prejudice – ARC received via Booksprout from the author.

Abby Green is usually a go-to for me, and while I did finish this in one sitting, I have to say this one left me torn. The writing is a solid 3 stars — clean, easy to follow — but the story itself didn’t quite hit the emotional mark I look for.

The trope just isn’t one I personally enjoy: IVF, surrogacy, surprise baby — all wrapped up in a scenario that felt a bit far-fetched. Tara, our beautiful Irish heroine, discovers that her frozen eggs (frozen at 23, and she’s only 25 now!) have been fertilized and used without her knowledge. The reason for her egg freezing didn’t fully convince me, and that did take me out of the story a bit.

That said, the meet-cute between Tara and Greek billionaire Dion was actually fun — sparks flew, and I liked their chemistry. But again, one-night stands aren’t really my thing, so it started to lose me there. Dion is your typical tortured hero — all broody cynicism, childhood abandonment, mistrust of women — and he genuinely seems to believe that every woman is out to use him and run.
I kept waiting for more depth, more angst, more emotional build-up. Dion’s internal thoughts remain stubborn and cold, and some of his actions crossed the line into cruelty.

This had all the ingredients of a great romance, but something vital was missing. A bit more vulnerability from Dion, a bit more fight from Tara, and this could’ve been a four-star read.
There were moments that could have delivered — like when Dion literally picks Tara up after sex and moves her to a guest room while she’s asleep (seriously?) — but those scenes never fully unpacked the emotional impact. Tara calls him out, but it doesn’t go deep. And honestly, she was so forgiving. I wanted to shake her. Understanding is fine, but when it becomes blind acceptance of selfish behaviour? No thanks.

Still, I didn’t hate the book. It had potential. Tara is sweet and grounded, and she genuinely tries to show Dion what unconditional love looks like. But he stays stuck in his head for too long, and when the emotional turnaround does come, it felt a bit too little, too late.

In the end, it’s a light read — I flew through it. If you’re after a low-angst, easy romance with a familiar set-up, this might hit the spot. But if, like me, you crave emotional grit and a bit more bite in your billionaire heroes, this one might leave you wanting more.

[Shelley G · Rating 5 out of 5]

new author for me i loved this heart warming story of how dion who had a terrible childhood filled with abandonment had a baby via surrogate trying to create his own family. however, after meeting and sleeping with virgin tara at a party its discovered she's his babies bio mom after a mix up in egg usage from the fertility clinic. tara had no idea the man she gave her virginity to was the man she was looking for so when it was discovered everything blew up. of course dion a billionaire thinks tara set him up and couldn't possibly be his son's mom. tara desperate to find out the truth takes steps to get to her son demanding testing to prove she's telling the truth. she is determined to be in her son's life all while dion is determined to prove she will eventually abandon her son like he was abandoned. the story dives into the push pull of them navigating dangerous waters of being parents, figuring out their way in this new world of events, all while dealing with the unrelenting physical chemistry between them that makes it impossible to keep their hands off each other. as feelings deepen dion gets more terrified of what his heart is telling him so takes steps to push tara even further away while tara is desperate to make dion see how much she is coming to love him. can dion ever find the courage to open his heart before its too late and the pushing he's doing pushes tara completely out of his life? what happens when he starts thinking about tara finding someone new and having more children with another man while his life remains cold and sterile? can they ever find their way to each other and being a family with niko truly in love? wonderfully developed characters, amazing world building, wonderful true life showing of a crazy messed up wild loving family who survived despite tragedy and well written details about a man who went from rags to riches but was starved of anything resembling love and affection rejected at every turn learning how to love and be loved in return.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Vicki Stephens · Rating 5 out of 5]

Billion Dollar Baby Shock is the contemporary romance between Tara, who has her eggs preserved at a fertility clinic, and Dion, a Greek tycoon who has a six month old son who happens to be her son as well thanks due to a mistake by the clinic. Tara sets out to find her son only to have a one night stand prior to her visit. Unfortunately, the stranger for her one night stand was Dion. This book has great characters, trust issues, and a romance shaped by close proximity.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Kyareth14 · Rating 5 out of 5]

Love this story, a mistake ended up leading to Dion and Tara being the parents of a child not even known. The situation was a bit difficult and confusing, but at the moment they saw it was love at first sight and although everything was complicated they managed to solve everything and be happy.

[PurpleLadi · Rating 4 out of 5]

I enjoyed reading Billion-Dollar Baby Shock, by Abby Green. Dion is a single self-made billionaire and wants to have a child to inherent his wealth and company. He was rejected by his cheating wealthy father at birth and abandoned by his mother as soon as the hush money, from his father, ran out. Dion doesn't trust women, so he is not interested in romantic entanglements or a wife, but a mix up at the fertility clinic derails his plans. Tara and her younger siblings lost their parents at a young age. She put her own life on hold to help raise her younger siblings. Now they are all grown up and, so Tara froze some eggs to use after she has had an opportunity to live for herself. Unfortunately, her plans to be childfree is ruined when the fertility clinic uses her eggs with out her permission. Dion has no idea that due to an error, he and Tara are parents to baby Nico, and nothing is going to stop her from being Nico's mother.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Linda C · Rating 4 out of 5]

Abby Green created a heart wrenching story. A mother searching for a child that was accidentally conceived using her egg. A father determined to have a child without entanglement of a relationship. Tara is a strong young woman. She will not give up her child. Dion doesn’t do relationships. There begins the conflict. The story has family, sacrifices, determination, childhood trauma, close minded, distance, chemistry, hurt, and openness.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Vanessa Sylvia · Rating 5 out of 5]

I loved this story of Tara and Dionysios. She had her eggs frozen and in error one was given to Dionysios. Now she finds out she has a son. This is a heartwarming story of a mother's love and the man who holds her heart. Happy ending included.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.