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There’s a killer inside all of us…

After an elite criminal profiling unit is shut down amidst a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psychologist Doctor Alexander Gregory has a reputation for being able to step inside the darkest minds to uncover whatever secrets lie hidden there and, soon enough, he finds himself drawn into the murky world of murder investigation.

In the beautiful hills of County Mayo, Ireland, a killer is on the loose. Panic has a stranglehold on its rural community and the Garda are running out of time. Gregory has sworn to follow a quiet life but, when the call comes, can he refuse to help their desperate search for justice?

Murder and mystery are peppered with dark humour in this fast-paced thriller set amidst the spectacular Irish landscape.

“LJ Ross keeps company with the best mystery writers” – The Times

“A literary phenomenon” – Evening Chronicle

“LJ Ross is the Queen of Kindle” – Sunday Telegraph

Edition Language:English
Format Type:

    Impostor Reviews

  • Alan Cotterell

    Wow, that was a fantastic start to a new series. When I first heard there was a new series by the author I first thing was does that mean no more DCI Ryan. But thankfully not the case.Dr Alexander Gre...

  • Melanie Lewis

    Before we get down and dirty with this book, let's address the elephant, (or should I say 'male god') in the room; a certain Hugh Dancy - narrator. Is it fair to say that with that face he's wasted as...

  • Carolyn

    This is a great start to a new series featuring forensic psychologist. Alexander Gregory currently works in a high security psychiatric hospital in London but was previously part of a now disbanded ps...

  • Sarah

    Oh my days! From the opening pages of this book, I was well and truly hooked.I don’t want to say to much to spoil it for others but I was very much intrigued with the thread to do with Cathy Jones. ...

  • Barry

    Imposter is one of the more aptly named books I have ever read. Alexander Gregory was once, supposedly, a member of an elite psychological profiling group but is now serving as a psychologist in a hos...

  • Mairead Hearne (

    Unfortunately it was not a book for me. I read Impostor to completion but, being Irish myself, I was a bit surprised at some of the inaccuracies about Ireland within the text and the story line.The pl...

  • Ken Kirkberry

    LJ Ross new series (a departure from DCI Ryan), the Impostor introduces forensic psychologist Doctor Alexander Gregory. Gregory’s day job is looking after patients at Southmoor Hospital in London bu...

  • Nyx Kateryana ?

    I was fascinated and utterly hooked on the story. The plot is engrossing. The writing is easy to get into. The pacing is smooth. The characters were great, very likable and relatable. The mystery surr...

  • Kerry

    WOW! What a start to a new series!!Those who know me well will know I’m a massive fan of LJ Ross and her DCI Ryan Mysteries. I was SO excited when I discovered there was going to be a new series fea...

  • Col

    Synopsis/blurb ...There’s a killer inside all of us…After an elite criminal profiling unit is shut down amidst a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psy...