Blondie and Dagwood are in charge of operations at a mountain motel. The elderly owners of the establishment are in danger of losing their life savings. Among other things, arson threatens.

Dr. Henryk Savaard is a scientist working on experiments to restore life to the dead. When he is unjustly hanged for murder, he is brought back to life by his trusted assistant. Re-animated he turns decidedly nasty and sets about murdering the jury that convicted him.

A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

"The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance.

Delia Jordan's father is murdered and some very valuable jewelry stolen. She hires The Lone Wolf.

An undercover agent wrongly punished for murder is paroled to a remote tropical island with a diamond mine slave labor run by a sadistic foreigner.

In this tearful crime melodrama, a waitress becomes so taken with her dream of living in posh luxury and comfort that she leaves her honest boyfriend, who has just been promoted to assistant district attorney, to take up with a notorious gangster who lavishes her with stolen furs and fabulous diamonds. Unfortunately, the luxury and comfort come with a life of crime and soon she is wanted for murder and jail-breaking.

The son of a man sentenced to death for a murder he didn't commit vows to become a criminal himself. He starts his own street gang, and their crime spree is financed by a mysterious young man--who turns out to be the son of the District Attorney who sent the boy's father to the electric chair.

A young man befriends the last surviving Civil War veteran, intending to rob him of $50,000.

Larry Willis and Bill Wane are security guards who ride in the back of Banks Co. armored trucks. When they barely avoid a robbery, they return to headquarters, where their boss John Hale introduces them to detective Tom Sheridan, who will be working with them to uncover a new gang of robbers.