S2·E17 Phoney Booths, Part 1

Cad, Simon Bar Sinister's henchman, replaces real phone booths with Phoney Booths. When he returns to the lab to tell his boss all the booths have been replaced, he asks what they do. Simon demonstrates by deceiving the milkman that his office wants him to call and directs the unsuspecting milkman into one of the Phoney Booths. The booth jumps and spins and when it opens, the milkman emerges in a trance repeating 'I will do what Simon says'. Simon instructs the milkman to destroy all his milk bottles, then remotely tells him to drive his milk truck into a pole. Then he tells him to go home and await further orders.