A cozy sci-fi novel from the New York Times bestselling author of Star Wars: Brotherhood

The only thing harder than finding someone in a time loop is losing them.

Grieving her best friend's recent death, neuroscientist Mariana Pineda’s ready to give up everything to start anew. Even her career—after one last week consulting at a top secret particle accelerator.

Except the strangest thing happens: a man stops her…and claims they've met before. Carter Cho knows who she is, why she's mourning, why she's there. And he needs Mariana to remember everything he’s saying.

Because time is about to loop.