Jumping Jenny

At a costume party themed around infamous murderers and their victims, amateur criminologist Roger Sheringham becomes intrigued by a particularly dramatic guest. His suspicions escalate when she is discovered hanging from a gallows, prompting him to interfere with the investigation and inadvertently put himself at risk as the police delve deeper into the case. This 1933 novel is a hallmark of the inverted mystery subgenre, skillfully challenging the conventions of classic detective fiction.