When Lionel the great, a stage magician, is poisoned at a theatrical boarding house, the two most likely killers are his wife and agent. But when valuable jewels are reported lost, King suspects another culprit.
Rocky, with Sgt. O'Hara, returns to school for the first time in years and finds many changes. A seemingly unloved principal is found dead and the two work together to find the culprit.
An unidentified girl is found in front of a house. The occupants claim no knowledge of the deceased but when Rocky finds the murder victim's purse stashed in the grand piano, the mystery deepens.
A rich beautiful woman has vanished and Rocky takes on the case. There is a minimum of clues but Rocky thinks the contents of a fish bowl may provide the solution to the lady's whereabouts.
A body is discovered and Rocky suspects ties to the criminal underworld. In cracking the case Rocky hope to bring down the syndicate and its illegal activities.
Rocky's new case is curious because the victim is first killed by a fireplace poker, then flung out of a high rise window. With few clues, Rocky stubbornly persists.
A daredevil race car driver is found beaten to death at the track. Rocky and Sgt. Hart arrive on the scene and find a oil smudge near the murder which may provide the clue to break the case.