New York Times bestselling author Nancy Thayer whisks readers back to the beloved island of Nantucket in this delightful novel about two single parents who accidentally rent the same summer house—and must soon decide where their hearts truly lie.

Sensible thirty-six-year-old Sophie Anderson has always known what to do. She knows her role in life: the supportive wife of a successful architect and calm, capable mother of two. But on a warm summer night, as the house grows quiet around her and her children fall asleep, she wonders what’s missing from her life. When her husband echoes that lonely question, announcing that he’s leaving her for another woman, Sophie realizes she has no idea what’s next. Impulsively renting a guest cottage on Nantucket from her friend Susie Swenson, Sophie rounds up her kids, Jonah and Lacey, and leaves Boston for a quiet family vacation, minus one.

Also minus one is single parent Trevor Black, a software entrepreneur who has recently lost his wife. Trevor is the last person he would think could raise a little boy like Leo by himself at any age, much less at thirty. Leo’s a sweet, smart boy, but he grapples constantly with his mother’s death, growing more and more closed off. Hoping a quiet summer on the Nantucket coast will help him reconnect with Leo, Trevor rents a guest house on the beautiful island from his friend Ivan Swenson.

But best-laid plans run awry when Sophie and Trevor realize they’ve accidentally rented the same house. Determined to make this a summer their kids will always remember, the two agree to share the Swensons’ Nantucket house. But as the summer unfolds and the families grow close, Sophie and Trevor must ask themselves if the guest cottage is all they want to share.

Inspiring and true to life, The Guest Cottage is Nancy Thayer at her finest, inscribing matters of the heart and the meaning of family in graceful, knowing prose.