Sheriff Cammie Farnsworth and her boyfriend, Jace Northcott have travelled to the remote and, some say, cursed Coffin Islands off the coast of Maine to recover from the trauma of her last investigation. There, she unwittingly stumbles onto a murder that reaches back decades. Violet Munson has come to the Coffin Islands for the last time. Trying to pack up the vacation home before she puts it on the market, she slowly realizes there is an evil within its walls she cannot escape. When she uncovers a horrifying secret from her family's past, her life is in danger from forces she cannot see, much less understand.Meanwhile, back in Twin Ponds, Deputy Rick Belleveau and Emmy Madachuck must uncover the identity of a skeleton that may finally unravel a mystery that has haunted the small town for over sixty years. Yet someone doesn't want the truth revealed and will do whatever it takes to stop Rick and Emmy from uncovering the past and the secrets buried there.