In the sixth episode of an eight-part story arc, the Stephenses and the Tates continue their sightseeing tour of Salem, MA, where most of the episode was filmed. When she accidentally causes Larry's expensive Paul Revere teapot to vanish, she tries to make amends, only to conjure up the spirit of Paul Revere (Bert Convy) himself. Still thinking that he is in colonial times, Revere vows to prevent British businessman Sir Leslie (Jonathan Harris) from "invading the American market." Written by Philip Sharp and Henry Sharp, "Paul Revere Rides Again" was originally telecast on October 29, 1970. ~ Hal Erickson, Rovi