Sometimes forgiveness of the past is the only way forward.
At age 46 and after raising three boys, Julia Harper has just learned her husband no longer loves her and he's just been waiting for the children to become adults so he could leave. Hopeful, Julia applies for the job of caretaker at The Lighthouse Inn on the island of Nantucket.
What she doesn't know is that her half-sister lives just across the sand from the inn.
Janey Forsythe recently found out her biological father is Ryan Harper—who is also Julia's father. When she sees the brunette unpacking and introduces herself, Janey realizes who she is, panics, and gets out of there as fast as possible. She and her sister, Tessa, have stayed on Nantucket, hoping to build a new life for themselves after their dangerous summer cleaning out their mother's cottage.
Madelynne Lancaster finds herself in a similar situation as Julia: newly divorced, with old money in her bank account but no one to spend it on. No children, no spouse, no friends to speak of, as they all left with her politician ex-husband. Bitter, Maddy also applies for the caretaker job at the inn.
The two women are paired together to begin running the defunct inn, only the two of them knowing the bitter past that has separated them for over thirty years. When they come face-to-face at the inn on Nantucket Point, Julia and Maddy are horrified and dumbstruck—and bound together by their contracted commitment and the obstacles in their pasts.
When Julia finds a picture of her father in an old scrapbook in the inn, she's horrified to see he's standing with a pretty woman...that's not her mother.
More pictures lead her to Tessa Simmons and the cottage across the sand, where she learns more about her father, her half-sister, and that Riggs Friedman was never apprehended for his crimes over the summer, what his real name is, and that his sister is still missing after three decades...
All of these lives tie back to The Lighthouse Inn, some secrets having been buried for decades. Can Tessa, Janey, Julia, and Maddy make sense of their complicated friendships, overcome the past, and solve the mystery before they get hurt?