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Sleeper 13 #3

Imposter 13

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Against all odds, Aydin Torkal - aka Sleeper 13 - broke free from the terrorist group that took him as a child and raised him into a life of violence and hate.

In the two years since, he's been tracking and killing all those responsible. But he's not done yet.

Now living a secret life in London, he receives a surprise visit from Rachel Cox of MI6. She needs his help to infiltrate a sinister new terrorist cell who've taken root in the USA.

Aydin is initially reluctant. But when he learns that a member of the group is the brother of Aziz Al-Addad, 'the Teacher' responsible for Aydin's horrific upbringing, his mind is changed.

Aydin thought he'd broken free from life as an insurgent. But in order to scupper their deadly plans, he must now convince the world's most dangerous terrorist cell that he's one of them.

He must do it before the world suffers another deadly attack.

He will have to do it on his own.

He is IMPOSTER 13.

402 pages, Kindle Edition

First published March 5, 2020

160 people are currently reading
294 people want to read

About the author

Rob Sinclair

34 books681 followers
Rob is the author of the critically acclaimed and bestselling Enemy series and James Ryker series of espionage thrillers. His books have sold over half a million copies to date with many reviewers and readers having likened Rob's work to authors at the very top of the genre, including Lee Child and Vince Flynn.

Rob began writing in 2009 following a promise to his wife, an avid reader, that he could pen a ‘can’t put down’ thriller. He worked for nearly 13 years for a global accounting firm after graduating from The University of Nottingham in 2002, specialising in forensic fraud investigations at both national and international levels. Rob now writes full time.

Originally from the North East of England, Rob has lived and worked in a number of fast paced cities and is now based near Atlanta, Georgia, with his wife, sons and dog

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5 stars
253 (46%)
4 stars
213 (39%)
3 stars
61 (11%)
2 stars
12 (2%)
1 star
7 (1%)
Displaying 1 - 26 of 26 reviews
Profile Image for Richard Murphy.
186 reviews
February 18, 2021
So this is the 3rd book in the trilogy and it is as strong as the other 2. If you have not read them, make sure you do as it is important to read them in order.

So in this 3rd book, Aydin is off grid and living in London before he is asked back into action by the one person in MI5 he trusts. Rachel Cox.

His task is pretty simple. She asks him to go to America and try and infiltrate a potential terrorist threat that may have links to him and as described in books in 1 and 2.

What follows, is a high paced, intriguing action packed thriller that will leave you eager to turn the next page.

Great stuff.
62 reviews1 follower
March 8, 2020
Excellent book again from a very talented writer.

I've just finished Imposter 13 and am exhausted! I hadn't realised how much I'd been holding my breath during the last few chapters. No spoilers, you'll have to read it yourself to find out what happens.
Profile Image for Brittney.
331 reviews16 followers
July 31, 2025
This book could’ve been 150 pages shorter. I still enjoyed the trilogy but I felt like this one dragged through the middle of the book.
Profile Image for Caroline.
226 reviews
April 4, 2022
Final installation…. Again I was gripped with the characters and action that followed. A great end to the trilogy and I do wonder if it could have been just one big book rather than three but I enjoyed it and would totally recommend it.
1,477 reviews25 followers
March 7, 2020
Imposter 13 Rob Sinclair

Book three in this series. In true tradition, another excellent read. SIS agent Cox with the help of a young man trained in a terrorist camp called the farm when just a young boy. Against his wishes. Not his fathers. Now he is helping agent Cox . Trying to stop numerous terrorist attacks in America. A price will be paid and he will pay it. Nonstop action and sacrifice. My highest recommendation.
6 reviews
March 23, 2020
Terrific

This was a great read. Having read the other two in the series, I knew it would be. Fast moving, full of suspense and terror. Once again the hero has to play to all his strengths, in order to combat his own fears against overwhelming evil.
Profile Image for Bernadette Robinson.
1,002 reviews15 followers
December 31, 2021
Having previously read and enjoyed the first two in the Sleeper 13 series, I grabbed a copy of this one from my local Library. It sat in my house for some time before making the decision to settle down and read it.

I quite enjoyed this thriller that brought to an end the story of Sleeper 13. We are reacquainted with Aydin Torqal, aka Sleeper 13. Aydin began life as a child terrorist, he was taken from his family and taught all he needed to know about violence and terrorism. Living in London now, his experience is sought after by the MI6. They need his help to stifle plans of a group that they want him to infiltrate and convince that he is one of them and more than capable of helping them carry out the atrocities that they have planned. Will he help MI6 and become Imposter 13? Can he prove that he is worthy of being one of the gang?

This story brings to the conclusion the trilogy known as Sleeper 13. It was a fitting conclusion in my opinion, I will not give too much away and let you judge for yourself should you ever pick this book up.
Profile Image for James Thornton.
63 reviews3 followers
November 14, 2020
A disappointing trilogy from a usually good writer. You can’t really like any of the characters, important parts of the investigations undertaken by Cox just fall into place without any explanation just to move the story on. Bad guys don’t really get their comeuppance, yes some ended up in a SIS black site but they were never touched on again and had caused Aydin so much trouble.

The duo of Aydin and Cox is ridiculous, there is no chemistry and she blindly believes he is a good guy when there is nothing to show he is and constantly does his own thing. There is no explanation how he escaped his captors at the beginning of book one and little by the way of flashbacks to his time at the farm. His uncle just disappears without proper explanation, his father is killed literally 5 minutes after reappearing.

I could go on with issues but there is little point, I had bought book one and two together so was compelled to read the third but I’m so disappointed with all three.

What a shame.
This entire review has been hidden because of spoilers.
1 review
April 8, 2020
The book was good but not great. The plot was predictable quite early on. Aidyn’s character was too lucky and should of died or caught many times. Escaping from the last encounter was too much of a reach. Plus an experienced agent would never get caught in a simple test of loyalty in the warehouse. And just how was his real identity discovered. Then relating it back to the first encounter disqualified every encounter after that.
The plot needed a twist, possibly another level of terrorist who were linked.
Profile Image for Tim Mullen.
189 reviews1 follower
April 26, 2020
An absolute barnstormer sees Aydin and Cox racing against time in Dearborn, Michigan to get the final answers to The Farm. Fast paced, not lacking Rob Sinclair's usual high body count, and excruciating detail in piling up the bodies, this is right up there with Sinclair's best. The end though? Only this master thriller writer knows that answer.
Profile Image for Vicky.
1,018 reviews41 followers
August 9, 2020
A well written finale of the trilogy with the ambiguous ending. There are no good guys in the story and the terror is the product of plots so twisted that there is no good ending for anyone. In a world of manipulation and twisted truth everything is hidden and fabricated. It is not a very pleasant book, full of disturbing violence, double standards and lies.
10 reviews
March 27, 2020
I found the final book disappointing. Book 1 and 2 was very good. I pre ordered book 3 looking forward to its release.
Sadly,for me I found it went on and on, no real plot other than a predictable end.
In my opinion book 3 is not of the same quality.
Profile Image for Lorraine  Martin.
108 reviews
April 2, 2020
It's a cracker

Another fantastic read from master Sinclair,Aydin miracle man,who needs Superman,surely this can't be the final instalment,you can't leave us hanging like that Rob........
Profile Image for William Viergever.
109 reviews
April 10, 2020
13

Incredible series; fast paced, great character development, and just the right amount of ... moral friction? Seriously, having read all the other Sinclair books, wasn’t sure how this series would fly given the conflicted protagonist ... but wow!! Well played Rob!
12 reviews
December 21, 2023
I would be cautious about recommending this book as it is quite gory in places and the violence had me wincing at times; but if you’re OK with that it was a good story and well-written.
This is 3rd in a trilogy. I haven’t read the others but that was not a problem.
250 reviews5 followers
April 21, 2020
Great

This author keeps you on the edge of your seat. I've read the first two books and I'm going to continue on.
.
Profile Image for Marmalade .
501 reviews
August 10, 2020
Aydin's story is over in this the final book of the 3 book series and I throughly enjoyed reading all about it!
15 reviews
August 25, 2021
Film in the making

Brilliant trilogy engrossing and great characters worthy of a film screenplay like the Bourne books...hope there aren't 13 out there
694 reviews4 followers
July 24, 2022
Great ending or was it

Ayden finally get to America. His chance to finish it. Lots of action and always guessing which way it will go. A masterpiece for sure.
Profile Image for Simon.
736 reviews4 followers
January 27, 2025
A good tense read, kept me guessing all the way through. Some reads might get to parts in the book that are about torture so be aware. 3 book series.
30 reviews
July 22, 2025
Not a great trilogy. A book of 400 pages was enough for all of the story. Disappointing read
Profile Image for Steven Hill.
13 reviews
May 29, 2023
Rob Sinclair is fast becoming my favourite author. Whether it's the Sleeper series, Dani Stephens or Ryker, his books are well written, suspenseful and full of action.

Imposter 13 carries on the Sleeper series in familiar vein. If you've read the previous two, you won't be disappointed.
Displaying 1 - 26 of 26 reviews

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