Have you ever wanted to go on a mystery cruise? Come along with Annie Laurence Darling, owner of the mystery bookstore, Murder on Demand.

The cruise has been planned to raise money for literacy. The citizens of Broward's Rock, South Carolina, dressed as their favorite detectives, have purchased tickets for the cruise and are ready to set sail. Annie has written a mystery play to be performed throughout the evening. The one who solves the mystery will win a prize.
Competition is fierce!

Unfortunately, not too far into the cruise, Pamela Potts falls overboard. She is rescued but does not regain consciousness. The ship returns to port without completing the cruise. Annie, convinced that it was no accident, sets out to investigate the incident. The bodies pile up as Annie and Max, her husband, rush to unmask the killer before her sister is the next victim. There are many surprises along the way!