The likeness - Tana French

I knew her from somewhere, I'd seen that face a million times before. Then the whole world went silent, frozen, darkness roaring in from the edges and only the girl's face blazing white at the centre; because it was me, blue-lipped and still, with shadows like dark bruises under my eyes. 

Still traumatised by her brush with a psychopath, Detective Cassie Maddox transfers out of the Murder squad and starts a relationship with fellow detective Sam O'Neill. When he calls her to the scene of his new case, she is shocked to find that the murdered girl is her double. What's more, her ID shows she is Lexie Madison - the identity Cassie used, years ago, as an undercover detective.

With no leads, no suspects  and no clues to Lexie's real identity, Cassie's old boss spots the opportunity of a lifetime: send Cassie undercover in her place, to tempt the killer out of hiding to finish the job.

Plenty of murder cases turn into battles of wits, but this was different. My real opponent wasn't the murderer but the victim: perfectly matched against me in every way, too close to call...

Tana French follows her stunningly accomplished debut, In the Woods, with an equally compelling psychological mystery that confirms her place as one of the most exciting new voices in crime fiction.