Columbo's first mystery pits him against a cheating doctor out to get rid of his wife in favor of his young, pretty actress girlfriend.
A high-flying lady lawyer kills her husband for the insurance money, and tries to makes It look like a kidnapping gone wrong.
String discovers that an old friend is a double agent when a schematic he was to turn over to the FIRM is stolen.
Ponch and Bobby have to take care of a kidnapped dog and a sick child runaway. Kevin is dreaming from ufos bringing him away from his sickness. Ponchs friend allows him a look into the night sky.
Ponch meets the woman he wants to wed. But his love dies by an accident, caused by a drunken driver.