A happily married woman wakes up to an astonishingly different life in a funny, emotional, and twisty romantic comedy in reverse by the author of Three More Months.

It's Riley Ricci-Chase's first wedding anniversary, and she's living a perfect life in London with her utterly devoted husband, Tristan. So what if his parents and insufferable cousin Milo work Riley's last nerve? She has Tristan.

The next morning Riley wakes up exactly one year later. No wedding ring. It's Milo by her side. And Tristan is a happy new father--with another woman. None of this is surprising to anyone. Except Riley. Where does she go from here? With every new tomorrow, she's moving backward through time to face a year she's already lived, one she's completely unprepared for.