Déjà Vu: The Peril of Pauline.

French environmental scientist Dr Pauline Joubert, about to expose secret warfare technology, was assassinated by her hitman/lover in New York's Central Park in 1985. In present day Manhattan, Cassie Cole, a hillbilly True Crime blogger (from the Deep South), continually re-lives Pauline's murder, discovering that she is Pauline's reincarnated soul, and eventually solving a decades-old crime.