The Likeness by Tana French

 

I love Tana French's work, find it addictive, and this one eventually worked its way under my skin. But it was way too long. The premise was cunning if farfetched - an undercover detective has her (undercover and abandoned) identity stolen by a young woman who looks exactly like her, and ends up murdered. The detective infiltrates the group home the victim lived in (with four close friends) to try to find out clues toward the identity of her murderer.