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Publisher's Summary

He's not like anything Lana has ever encountered.

Asset X: Massive, deadly, and a little terrifying to say the least. A devilish warrior, and a killer. Captured on a hellish world after attacking a military campsite and now imprisoned in a state-of-the-art cell inside one of the military’s top bases, Lazris. Lana has been assigned to "study" him; to learn his secrets and gain his trust, if he is ever allowed to set foot out of his cell. As a top behaviorist, it is the biggest hurdle of her career. 

Asset X - or Xerus as he is called - won't give up his secrets easily. He is difficult, elusive, and dare she say, unfathomably alluring...despite his seething demeanor and hard, frightening physique. Something subconsciously draws her to him. Something wildly irresistible. Even if his wicked smile and needful gaze could just be a ploy to win her trust and escape his cell. She shouldn't think of him like that. He is an alien after all. And possibly their enemy. 

Xerus claims he is on a mission. A mission to destroy. And he cannot afford to fail. If he dares let Lana get close, dares open his cold heart to her, she could compromise everything. 

This book contains heated intimate scenes and some violence. It is intended for mature listeners.

©2021 Olivia Riley (P)2021 Podium Audio

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What listeners say about Heart's Prisoner

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    5 out of 5 stars

Slow burn authentic alien action romance

This outstanding alien slow burn action romance with a suspenseful plot that twists like the corridors in the military underground base where it all takes place, is written rather realistically. The characters and the situational atmosphere/ vibe are very authentic. The whole story line is very well thought out and takes you on a journey of discovery with the heroin. The alien is refreshingly unpredictable, mysterious and differs from human cultural norms - therefore this is not an insta love story with a romp in the sheets after the first chapter - the romance developed later in the book. This book is more focussed on connection, trust and bridging cultural chasms - but the chemistry of the two main characters is nevertheless very palpable. There are only a few books this one can compare with. If you like 'Saving Askara' by J. M. Link you will defiantly like this one. The book has a few gripping scenes, but it doesn't go into horror like some reviews on the internet imply. If you watched Jurassic Park you will be fine. The performance of the narrator is superb and entraining - giving distinct voices and dialects to various characters. Can't wait for the next in this series.

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  • Carol
  • 31-05-2021

Nail biting mystery

This is one of the books that I could not put down because I just absolutely had to find out what was going on. Nothing was straightforward and plenty of hints that there was some mystery. There was more focus on the mystery than the romance, but the romance was very important. There were plenty of bad guys that I loved to hate, especially when they belittled and sexually harassed Lana. I love it when a narrator performs the reading in such a way that I forget that he or she is reading a book. Ms. Mitchell’s talent was superb.

6 people found this helpful

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  • Kindle Customer
  • 25-04-2021

Amazing

Absolutely great story! Especially if you're a fan of a slow burn! The characters were strong and the voice acting was fantastic.

4 people found this helpful

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  • potsherds
  • 05-07-2021

An ACTUAL good adventure alien romance novel

With a PLOT.
Fairly cliched story if even I can figure out the mysterious enemy almost immediately, but a well-written story nonetheless. I thought the pacing was good, people didn't act like complete idiots (mostly) or do 180's on their own personalities, and folks responded appropriately to situations. So it avoided a lot of the pitfalls of the usual cringe-worthy alien romance genre. The level of hostile sexism the mc encounters is over-the-top and unbelievable, though.
World-building was believable and sufficiently thorough.

Don't expect award-winning genre fiction, But it's pretty great within it's assigned lane.

3 people found this helpful

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  • Amazon Customer
  • 29-04-2021

great book

this book was fantastic. A slow burn romance. the narrator's voice was amazing! A must read!

3 people found this helpful

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  • Rockin' Reviewer
  • 09-06-2021

Great book!!

This is the first book in Dark World Mates series and it is spectacular!! It's like a mix of Resident Evil and Doom all into one nail biting book. There's deceit and suspense as well as some steam. This is also the first book by Olivia Riley that I have listened to and there will definitely be more.

1 person found this helpful

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  • Melissa Irvin
  • 25-05-2021

very different

kind of long...but a descent love story.. some twists. the ending was a shocker but nice

1 person found this helpful

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  • Amazon Customer
  • 08-09-2021

Amazing FIND

the story moved slow at first. ( stay the course) you wont regret it .. strong characters. subplot takes over some time but the world building is important.. LOVED. the story. will enjoy the next and the next hopefully

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  • Yuri
  • 27-08-2021

Phenomenal!!

Loved it! Definitely one of my favorite alien romance books. I wish there was more! Can't wait to listen to the second book! The narrator was pure perfection! Definitely going to listen to more of her books.

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    3 out of 5 stars
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  • Amazon Customer
  • 26-08-2021

Right in the middle

This isn't sci-fi erotica and it isn't a deep romance. It is a nice little sci-fi story that happens to have the 2 main characters get together. It is popcorn movie action/romance. Basically PG-13, but gets a R rating for the one and only sex scene.

The female main character is a but stupid for all her behavioral science education and experience. A bit too much naivety for what the male protagonist is saying and doing for her to be all surprised Pikachu at times.

Overall I enjoyed it, but I'm more into erotica than romance, so 5hrs + into the book to get the one hook-up wasn't worth it to me and I won't likely be spending the time or credits on the other books. Just not my cup of mild tea when I can get the same level of creativity and entrainment from a 2hr movie.

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  • Bella
  • 20-08-2021

Male perspective

Wish we got to hear more from the male characters, but other then that good book!


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  • Anonymous User
  • 06-09-2021

Very good 😊

Very good story. Easy to listen. I just wish there was little more hot scenes😅 if you look for spicy alien book this is not it. Only last 2 hours something happened between them( only one okay sexy scene)But the book was written so well and the story was so good that I actually didn’t mind. I will definitely buy book 2 in this series 🤗

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