During her tragically shortened life (she died at age 60), almost all of which was spent in service of acting, Kay Medford gave her all to every role she played -- drama or comedy, musical or non-musical -- and here she does no less. She gives a luminous performance, funny and poignant by turns, as a woman dealing with a troubled marriage and middle-aged angst which lead her to believe her husband (played by Jack Kruschen) is a kind of impostor of the pod person/body snatcher variety. Harris treats her with genuine compassion instead of his usual flippant snark and Kruschen does his shtick, and the episode succeeds in its modest and limited goal of entertaining the viewer while never insulting his or her intelligence.