On the wild Oregon coast, tucked between the mountains and the sea, stands Siren Song, home to a group of women known as The Colony. Their aunt hoped the isolated lodge would be a sanctuary, a place where she could protect them and their special gifts. But nowhere is safe from the man who has marked them for death. The note pinned to the dead body found on the remote beach has no name, just Ravinia Rutledge's phone number and the words Next of Kin....

Taking on a new client in the form of an overworked mom and her three unruly children, the newest Baby-Sitters Club member, Dawn, struggles to prove her resourcefulness.