Casey moves into a rooming house to try to befriend a woman whose former boyfriend was a suspect in a jewel heist.

Casey attempts to find an artist who has abandoned his young daughter.

Casey investigates a series of threatening phone calls made to a woman.

To solve an armed robbery case, Casey assumes the identity of a blackmailer, then acts as an intermediary between the victim and the perpetrator.

Casey poses as a nurse in a sanatorium to trace the source of a stream of illegal narcotics.

Casey is assigned to investigate if players on a college basketball team are fixing games.