While in Mexico City, Jessica (Angela Lansbury) researches two crimes when a mask stolen from the National Museum is found on the face of a murder victim. Guest stars: James Coburn, Gregory Sierra and Geno Silva.
The Bunkers take in a boarder to help revive their battered budget.
Rockford jeopardizes his friendship with Becker when he takes it upon himself to investigate the slaying of Deputy Chief Towne's unfaithful wife.
Jack Dalton, with MacGyver's help, searches for the Fountain of Youth in a land that appears to be the mythical Shangri-La, but also harbors a base to facilitate H-bomb construction.
Ben searches for a witness capable of clearing his client in her unfaithful husband's murder.
