A sleepy seaside town in Massachusetts. A quaint bookshop. And a murder. Returning to Somerset Harbor, Rue Collier looks after her gran's bookstore while she's kicking off her retirement with a dream trip to Paris. As Rue settles in, she reunites with old friends and is excited to start a new chapter in her life. But not long after she rings up her first customer, the town is in an uproar over the murder of a local bakery owner...