"Blythe Harmon is on the fast track to a life she never wanted. On her thirtieth birthday, just as she's about to lock herself into a high-powered job and accept a marriage proposal to match, an unusual bequest from her beloved late grandmother, Nomi, offers an escape and invitation to adventure. Equipped with Nomi's urn of ashes and a treasure map, Blythe sets off for a small island in the San Juans where she rents the mysterious and unsettling Improbable House. Secret by secret, clue by cryptic clue, she begins to unravel the puzzle her grandmother has left her to piece together. Her quest is complicated, though, by a powerful attraction to an enigmatic islander and empathy for his orphaned niece, both of whom are inexorably tied to the old house. Just when Blythe thinks she's on the verge of solving the mystery, her quest takes an unexpected turn, and she discovers that the treasure she's really seeking is something that could never be buried in the ground."-- Provided by publisher.