The Crime Doctor's Courage

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.

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.

Amateur sleuth Ellery Queen learns the truth about a businessman's two long-lost daughters.

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.

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.

Famed detective and crime novelist Ellery Queen solves a case involving the suspicious death of a rich man whose inheritors fight over his estate.

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.

In the 7th film of the "Crime Doctor" series based on the radio program, Dr. Robert Ordway is summoned to take attend a diabetic, and gives an injection of insulin taken from a bottle in the patient's pocket. The man dies and Ordway discovers that what he thought was insulin was really poison. Oops! Two other people are murdered before Ordway discovers who replaced the insulin with poison and what the motive was

While on vacation, a criminal psychologist investigates a murder during a typhoid epidemic.

While visiting France, a criminal psychologist tries to clear a disturbed young man of his father's murder.

A criminal psychologist treats an artist whose blackouts coincide with a series of murders.

A radio detective sets out to solve an old murder case, with the help of her sound man and another radio detective. They manage to talk to the people involved in the case, but shortly afterwards the main suspects turn up dead.