Mario is a former gangster turned garage owner. His former accomplices ask him to murder Magali, their leader 's mistress,who intends to turn her lover in.
Swindler in jail devises a scheme to blackmail the family of recently deceased people, threatening to tell supposedly incriminating facts about their dead relatives' lives.
Twins (both played by Infante) are separated while very young, one raised as a singer by their widowed mother and another as the heir to one of Mexico's richest families.
A sheep rancher entrusts his goofy sheepdog Dizzy to guard his herd one night. The dog is told to blow a whistle when he sees a wolf, but he spends his time fooling his master by "crying wolf," and he proceeds to blow the whistle for no reason other than to excite the farmer.
After being framed for a murder he didn't commit, Tom Penney (Donald Houston) serves his time and returns to his rural English home to establish a quiet life.