Summer brings good business to Annie Darling’s mystery bookstore, Death on Demand, as tourists swarm in, searching for the latest beach read. But July 4th brings its own mystery as first one and then another islander disappears. Annie and her husband, Max, soon find themselves following a twisted trail marked by adultery, blackmail and betrayal as they pursue a cold-blooded killer in the dog days of summer.

Annie Darling enlists the help of her husband, Max, to piece together a puzzle involving an overturned kayak, a stolen motorboat, a troubled love affair, and a reckless teenager. And she must tread carefully in her investigation, because a killer is on the loose, and that killer works well in the foggy days of winter.