Who Killed Cynthia Royal?

A missing Siamese cat named Deborah is Burke's prime clue to the killing of Cynthia Royal. The murder victim had just arrived in town from Chicago trying to reunite with her estranged husband. The husband had been wooing a nightclub singer, which leads Burke also to suspect the nightclub's owner/comic and his attorney. When Burke and an elderly acquaintance stumble across another body, the trail eventually leads to two beatniks, the return of Deborah and the solution of the case.