For George's birthday, Louise books herself, George and Florence on a murder mystery cruise ship for mystery novelists, thus George pretends to be a novelist. George is having fun trying to solve a murder mystery until an apparant ""real"" murder occurs.

The novelists try to solve the apparent ""real"" murder with George trying his best to solve it as well. When it is determind that the victim, Edgar, was poisoned the crew deduces that the Duchess did it, however in the end George discovers the real culprit.