Roy Morgan is a burglar who listens in to radio police calls, allowing him to stay one step ahead of the cops. After Morgan kills a police officer, Sergeants Brennan and Jones have little success in putting the clues of the case together. But when Jones is wounded in a shoot-out with Morgan, Brennan employs all facets of detective work, including forensics and informants, to find the elusive and clever criminal.

Hoppy, California, and Lucky travel to Mesa City for a short vacation. California buys new clothes and carrying his old ones in a suitcase, bumps into escaping bank robbers in the dark. His suitcase gets switched with that of the robbers and he is seen with the money. Hoppy must find the money that has mysteriously disappeared and also the robbers so that he can clear California who is now in jail.

Hoppy, California and Lucky arrive at a remote inn, where Lucky expects to be married - but finds the bride-to-be in distress over her uncle, who has suddenly disappeared from the inn. Then Hoppy finds the uncle's body in the shaft of his nearby mine...

In this crime drama, a sorority girl is photographed hanging around with known criminals in illicit gambling dens. The resulting pictures are then used to blackmail her father, a district attorney.

Art curator George Steele experiences a train wreck...which never happened. Is he cracking up, or the victim of a plot?