"Harriet and Wyn have been the perfect couple since they met in college. Except they broke up five months ago and still haven't told their best friends. Which is how they find themselves sharing a bedroom at the Maine cottage that has been their friend group's yearly getaway for the last decade. Their annual respite from the world, where for one vibrant, blissful week they leave behind their daily lives. Only this year, the cottage is for sale and...

Haunted by a decision he made as a young soldier in World War I, involving a French artist and her baby, Nick Burns, with only months left to live, enlists Jenny, a college dropout, to help him unravel the mystery, forcing them both to reckon with regret, betrayal and the lives they've left behind.