A time-travel tale of love and murder… In the summer of 1973, 19-year-old Cassie returns to her home town on the Massachusetts coast after her first year away at college. The next day, her boyfriend, Julian, is implicated in a brutal killing. Seven years later, a freak occurrence gives Cassie the ability to travel through time without altering it. Revisiting Julian in the past has her falling in love all over again. Convinced of his innocence, she goes back to witness the murder and the events leading up to it. Afterward, she struggles to find a way to prove what really happened, while the killer stalks her past and present lives, determined to silence her.

A freak occurrence gives twenty-five-year-old Rebecca Danser the ability to travel through time without altering it. Her life is a mess because her younger sister disappeared on her watch when they were both children. Finally, she has the chance to learn what really happened that day. She travels back in time to witness the abduction firsthand. Armed with new knowledge, she pursues the villain through past and present. There’s a slim hope that Sadie might even still be alive. But saving her sister could come at the cost of Rebecca’s own life.