This Universal programmer was based on a Collier's Magazine story by journalist Quentin Reynolds. This story in turn was ostensibly based on a true incident, in which a gangster "returned from the dead" to save an innocent young man from the electric chair. The nurse of the film's title is Katharine McDonald, who falls in love with her prizefighter-patient Lee Burke as he recovers from a beating received in a fixed prizefight. Katharine must fend off the advances of criminal attorney John Dodge, another patient who also loves her and becomes jealous of Lee. But when Lee is framed for the murder of his disgruntled manager, Slice, by a henchman of the fight-fix leader, Joe Largo, Dodge takes on his defense and works with Katherine to discover the real killer. Convicted and sentenced to death, Burke is about to walk the "last mile", as Katharine encourages mortally wounded Largo to a deathbed confession.

The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to get him to help them commit robberies.

A journalist finds out, that a plantation owner he meets is a gangster the police is looking for, who has changed his face with plastic surgery.

A magazine reporter exposes a crooked District Attorney, resulting in his trial. Complications ensue, however, when the man is acquitted.

A nurse's younger brother is caught in a shootout between a criminal gang and the police, and he is shot and killed. The officer who is accused of shooting the man knows that he didn't do it, and sets out to find the real killer and clear his own name.

Jimmy, the owner of a failed music shop, goes to work with his uncle, the owner of a food factory. Before he gets there, he befriends an Irish family who happens to be his uncle's worst enemy because of their love for music and in-house band who constantly practices. Soon, Jimmy finds himself trying to help the band by getting them gigs and trying to reconcile the family with his uncle.

Heiress Nancy Crocker Fleming will only receive her inheritance if she marries a "plain American." Her late father was afraid a foreign gigolo would steal her heart and money. So Nancy pays Tony Anthony, working on a WPA road project, to marry, then divorce her. When Nancy inadvertently drives off with Tony's dog, Tony seemingly kidnaps her to retrieve the pooch, which leads to a cross-country race between the two to reach Reno and the divorce court since neither one wants to be the second to file papers.

Fields plays "Larsen E. Whipsnade", the owner of a shady carnival that is constantly on the run from the law. Whipsnade is struggling to keep a step ahead of foreclosure, and clearly not paying his performers, including Bergen and McCarthy, who try to coax money out of him, or in McCarthy's case, steal some outright.

A drunken college student invites a dance hostess to the big college dance and then forgets he asked her. When she shows up at school, he tries to get rid of her, but she won't leave. Instead, she stays and shows up both him and his classmates' snooty dates.

Reporter Sue Walker has too much inside information on the local gambling rackets to suit her sweetheart, Detective Lieutenant Jerry Brown, chief of the police Homicide Squad. When the call comes in that there has been a killing at Lefty Ross' place, a notorious gambling joint, Jerry is peeved when Sue beats him there. He discovers that gambler Jimmy Clark was killed as he answered a telephone call, and his body is riddled with bullets but Jerry can't find any weapon. Sue is amazed to see Gloria Cunningham there. Gloria's father is one of the town's leading reformers and she is engaged to District Attorney Richard Sutton. Ross decides to give Sutton all the information he needs and makes an appointment to go to Sutton's home. Once there, Ross is called to the telephone before he can give any information, and is killed in the same mysterious manner as Jimmy Clark.