As the residents of the Pi Kappa Sigma sorority house prepare for the festive season, a stranger begins to harass them with a series of obscene phone calls.
In Columbo's first outing, a psychiatrist uses a patient he is having an affair with to help him kill his wife, but his perfect alibi may come apart at the hands of a seemingly befuddled LAPD lieutenant.
Two miners agree to guide a mysterious woman, who has appeared in their camp from nowhere, to a nearby town; but soon, because of her erratic behavior, they begin to suspect that her true purpose is quite different.