Deja Who

Leah Nazir is an Insighter. Reincarnation is her business. But while her clients' pasts are a mess, Leah's is nothing short of tragedy. She's been murdered. A lot. If left to that bitch, destiny, it'll happen again. Leah wants to know who's been following her through time, and who's been stalking her in the present...
P.I. Archer Drake has been hired by Leah's mother to keep an eye on her. But the more time he spends watching, the more he finds himself infatuated. Before long, he even finds himself agreeing to help find the person who wants her dead. Over and over again.
Now going full-on "rewind," Leah hopes it can stave off the inevitable. After all, she's grown fond of this life - and even fonder of nerdy Archer. But changing her pattern means finding out who her killer is today. And as Leah fears, that could be anyone she has come to know and trust. Anyone.