The head of Dartmouth Training College has been murdered, and his successor, Captain Hyde, suspects that he himself may have been the intended target. He enlists the help of his own son Philip, a reluctant cadet at the college, to help him confirm his suspicions about planned enemy action... but meanwhile, there is a Secret Service agent staying at the college observatory, the foreign-born professor of astronomy is behaving strangely, and Naval Intelligence disclaim any knowledge of what is going on...
When a landlady finds one of her tenants murdered, Inspector Hornleigh is sent to investigate. Inspector Hornleigh's assistant, Sergeant Bingham, soon finds an attaché case that had been stolen from the murdered man. When Hornleigh examines the case, inside it he finds a bag that was used to carry important government documents. The documents have been taken, and to make things even more confusing, a duplicate of the stolen bag soon turns up.
A industrialist has a row with his son, who leaves home. Meanwhile, both his assistant and solicitor conspire to embezzle a fortune in bonds. A plucky young newspaper reporter pursues the rich man's daughter.
A young man discovers £1,000 in a taxi. The kindly man gives it to an impoverished Irish girl (Geraldine Fitzgerald) by investing it in her cafe, The Cafe Mascot.
In this comedy, a talented singer is hired to dub the voice of a star who has lost his own. During the film's premiere, news that he sang the songs slips out and suddenly he finds that he himself has become a star. Unfortunately he soon encounters unanticipated problems. He is especially concerned about his girl friend who dumped him in favor of the voiceless star.
