When Darrin's alcoholic and lecherous client Rex Barker makes a pass at Samantha, she decides to teach him a lesson by turning him into a dog. The dog runs away, but Samantha eventually gets him back. When Rex makes another pass at her, Darrin knocks him cold. Rex does wind up giving Darrin his account.
Quest roles:
David White(Larry Tate), Alice Pearce(Gladys Kravitz), George Tobias(Abner Kravitz)