Roger Willoughby is a renowned fishing expert, who, unbeknownst to his friends, co-workers, or boss, has never cast a line in his life. One day, he crosses paths with Abigail Paige, a sweetly annoying girl who has just badgered his boss into signing Roger up for an annual fishing tournament.

In September 1942, the German Afrika Korps under Rommel have successfully pushed the Allies back into Egypt. A counter-attack is planned, for which the fuel dumps at Tobruk are a critical impediment. In order to aid the attack, a group of British commandos and German Jews make their way undercover through 800 miles of desert, to destroy the fuel dumps starving the Germans of fuel.

An unhappy middle-aged banker agrees to a procedure that will fake his death and give him a completely new look and identity – one that comes with its own price.

While in London trying to nab several fugitives who stole a million dollars from a U.S. Treasury vault, American federal agent Dennison (Dennis O'Keefe) assists Scotland Yard Insp. McClaren (Philip Friend) in his search for a missing atomic scientist (Paul Hardtmuth). The detective duo discovers that the key to solving both cases may rest with the scientist's daughter (Margaret Sheridan) and her fascinating diamond.

Convinced that a wartime resistance heroine is innocent of a murder charge, Nap Rumbold, a solicitor / private detective travels to France searching for evidence to clear her name.