Rigging a horse race, Don Carlos wins a lot of money. When he loses his winnings at the gambling table, he shoots the dealer with Horton's gun. Horton is arrested but cannot prove his innocence.

Jackie prepares a series of elaborate jokes for his new teacher.

Joan Wiswell, Ted Workman, and wholesome Helen Ripley are among the half-dozen or more suspects, all for good reasons of their own, murdered a high-society crook called Genne Cassenas.