In this western, a ranch foreman and the bosses son go to a saloon to slake their thirst and find themselves in the midst of a battle started by the feisty saloon owner's wicked ex-husband who loots the safe in the ensuing scuffle.
Carmelita and Uncle Matt find themselves in a haunted house, but the "ghosts" are actually enemy agents who are trying to frighten away visitors in order to develop a nitroglycerin bomb.
Conceited World Champion boxer Tommy Lundy decides to test his popularity in a Broadway show. Tommy always has an eye for the ladies and he starts paying attention to beautiful chorus girl Pat Lambert.
Tim McGuerin and Eddie Corbett operates a big taxi-fleet company together and because of a misunderstanding Tim's wife Sadie thinks he is having an affair with his secretary, Ms.
Scientist-explorer David Lynd leaves wealthy bride-to-be June Claymore at the altar to join photographer Andy Parker and British secret service agent Leo Marzeli in search of rare minerals.
Hoping to increase its box-office allure by adopting the title of a popular song, Deep in the Heart of Texas (clap!clap!clap!clap!) was the first Johnny Mack Brown western of the 1942-43 season.