This tale of intrigue finds Valentina Cortese involved in an assassination plot. She helps the police apprehend the conspirators after an innocent bystander is accidentally killed.
When a neutral Danish merchant ship is forced to put into port after trying to evade British wartime contraband control, its captain becomes involved in a beautiful British Naval Intelligent agent's efforts to capture a group of German spies operating from a London cinema.
When newly weds Jack and Peggy face eviction, they are tricked into buying a run down houseboat. After rebuilding the engine, they take their friends Sid and Sandra, on a local trip down the river to Folkestone, but somehow they end up in France, and with no fuel and supplies, they resort to desperate actions to get back home.
Returning from a cricket match in Ireland, Peter Weston gains a pet alligator from another passenger who abandons it with him. He is horrified and while his first instinct is to get rid of it he develops a relationship with a young Irishwoman who appears to be entwined with the reptile. He soon discovers that Daisy is tame and seems to be the way to Moira's heart.
Scotland Yard Inspector George Gideon starts his day off on the wrong foot when he gets a traffic-violation ticket from a young police officer. From there, his 'typical day" consists in learning that one of his most-trusted detectives has accepted bribes; hunts an escaped maniac who has murdered a girl; tracks a young girl suspected of involvement in a payroll robbery and then helps break up a bank robbery.
