Samantha joins a movement to have a traffic light installed at a busy neighborhood intersection. She engages the services of Darrin's friend, attorney Joe Harvey (Gene Blakely). Despite Joe's legal expertise, Sam is once again forced to resort to witchcraft to persuade the Mayor (Dan Tobin) to see her side of the story. The supporting cast includes Vic Tayback as the mayor's chauffeur. Written by Roland Wolpert, "Red Light, Green Light" first aired on March 4, 1965. ~ Hal Erickson, Rovi