Last Trump, first published in 1937 as part of the Red Badge Mystery Series, features private detective Peter Clancy, assisted by his servant Wiggars. The setting is a small cruise ship, and Clancy must determine who among the passengers is the perpetrator of a series of murders aboard the ship. Author Emma Redington Lee Thayer (1874-1973) published 60 novels during her long career, all but one featuring detective Peter Clancy.