Seventeen-year-old Lexi travels to her late mother's majestic summertime home to learn of the romance--and the tragedy--that changed her life forever.

Lexi has always wanted to know more about the mother who passed away when she was only a child, but her dad will barely talk about her. She loves her stepmom, and her half-brother, but is it so wrong to want to learn about the mom she never got to know? When Lexi's grandmother leaves her a chest that belonged to her mother, it contains letters, pamphlets, flyers, and news articles all from the same beautiful summertime getaway: Mackinac Island... plus a cryptic postcard that hints at a forbidden romance. Lexi goes to the Island without telling her dad. Following her mother's footsteps, Lexi makes friends and falls in love with her surroundings. But the Island is hiding unfortunate secrets that should perhaps be best left buried beneath the blue waters. -- adapted from jacket