Blonde Identity

Zoe wakes up in the middle of the night in Paris with no memory of her own name, only to discover she's the identical twin of Alex, a spy who stole the "little black book" of Russian mobster Kozlov instead of turning it over to the CIA. Agent Sawyer, who's chased Kozlov his entire career, mistakes Zoe for Alex — and once he realizes she isn't, he can't just abandon a woman with no home and a target on her back, so the two lie their way across Europe dodging bullets and faking chemistry to clear Alex's name.

Ally Carter opens the Blonde Identity series with an amnesia-driven, mistaken-identity romantic thriller full of banter, danger, and a road trip neither of them planned on.