Carla de Hulvea is a rumba dancer who makes news by posing as a South-American heiress. She is doing fine with her hoax until she meets American Peter Jackson, a high-pressure promoter who is looking for movie-producing money. He does some big-time bluffing on his own in order to get Carla to invest in a film he is making with his partner, Roy Harley. Through Carla, Roy meets actress Diana West, who is given a role in the movie, and Roy falls in love with her.

Jim Gay loves his racing greyhound but, out of town, he finds a dog with a better chance to win. His friends bet on his dog while he bets against.

A murder at a country house centres around the whereabouts of a horde of stolen diamonds and the unmasking of people who are not as they at first seem.

An American military officer and his wife move to a cottage in what they think is the peaceful English countryside, only to discover the area is a hotbed of spies and secret agents.

George Formby, who plays George, a stable boy. He also has the unique ability to soothe an anxious racing horse. Expectedly, George races the horse and wins

An engineer leads the building of a trans-Atlantic tunnel linking Britain and the United States.

A bookmaker with a fancy for detective work attempts to prevent the execution of a potentially innocent man.