Ralph Bellamy

Margaret Lindsay

Charley Grapewin

Spring Byington

H.B. Warner

Several days after one of his company's dams burst, ruining the life savings of several investors, a shady power company president is found stabbed to death. Ellery Queen gets to the bottom of the mystery.

Radio personalities Larry Abbot and Vickie Pearle are stars of a mystery show. Since they announced their engagement, Larry has been plagued by speech problems and, seeking out an unconventional cure, he returns to his boyhood home, a mansion in the countryside, bringing Vickie along. Larry reunites with numerous family members, but discovers that there are sinister things afoot within the walls of the creepy estate.

Detective Ellery Queen sets out to solve a puzzling case following the sudden death of a wealthy businessman.

A drifter claims the money in an old bank account. Soon he finds himself the target of two men who turn out to be the sons of the man's old partner, who is now in prison because of a conflict with him over the money in that account.

Leslie Calvin, the sole survivor of a submarine accident, goes to her relatives in order to recover emotionally. Unfortunately, she encounters various scam artists led by Mr. Sydney who intend to kill her and steal the family assets. Dr. George Grover helps Leslie to defeat Sydney.

Ellery Queen solves a mystery involving a valuable stamp.

Two dumb soda jerks dream of writing radio mysteries. When they try to pitch an idea at a radio station, they end up in the middle of a real murder when the station owner is killed during a broadcast.

The benefactor of the Stack Memorial Hospital dies after an operation. Ellery Queen investigates when it is revealed the cause of death was murder by strangulation.

Detective Ellery Queen aids Free Dutch agents battle Nazi spies over a prize of industrial diamonds.