Cosmo Jones, a correspondence-school detective from a small town, comes to the big city to offer his services to the police. He happens by where a gangster is killed by an opposing gang. Socialite Phyllis Blake is running around with gang member Tom and the opposing gang plan on kidnapping her. Cosmo is with Sergeant Flanagan when the attempt is made in front of a night club, where a bystander is seriously wounded in the gun-battle. Police Chief Murphy blames Flanagan for the shooting and demotes him. Cosmo, with the aid of a porter, Eustace and Flanagan's fiancée, Susan, tries to find the killer. Phyllis is finally kidnapped and Cosmo decides the act was committed by one of the two gangs. He has her father place an ad in the newspaper that contact has been made with the kidnappers. Each gang thinks the other is pulling a double cross, and one gang wipes out the other.

A doctor and his staff in a hospital on the Philippine island of Corregidor shortly after the Japanese attack on Pearl Harbor try to treat the sick, injured and wounded as American and Filipino troops desperately try to beat back a ferocious Japanese attack.

A wild playboy is framed by crooks for a robbery he didn't commit and eventually lands in prison. There he becomes pals with the prison's most hardened criminal, who plans a daring escape.

A reporter investigates the murder of a showgirl, who was the widow of a millionaire. While digging in to the mysterious murder of a showgirl (Vivian Wilcox), intrepid reporter Bob Martin (Robert Lowery) uncovers a connection between that case and another one he's been working on. An inmate (Lawrence Creighton) holds the key to the crime, but there's one problem: He's deaf and mute. Meanwhile, the murderers (Jan Wiley and Charlie Hall) appear to be working for a very powerful person.