escapes in the coach. However, with his dematerialisation circuit in the Doctor's hands, the Master is now trapped on Earth. Production Working titles for this story included The Spray of Death. The Autons were brought back because they had been popular in their first appearance the previous year in Spearhead from Space (1970). For the new season, producer Barry Letts and script editor Terrance Dicks wanted to add new characters. They thought about how the Brigadier was like Dr. Watson to the Doctor's Sherlock Holmes, and decided to devise a new character, the Master, to emulate Moriarty. The Master was meant to specifically contrast with Pertwee's Doctor; the Doctor was authoritative while the Master was charming, though he used that for an evil purpose. Terror of the Autons also introduced Katy Manning as Jo Grant (as a replacement for departed companion Liz Shaw), and Richard Franklin as Captain Mike Yates. The scene at the start of Episode Three, where an Auton is hit by a car and tumbles off a cliff, was quite real. Dinny Powell was driving the vehicle in place of actor Richard Franklin, and stuntman Terry Walsh, playing the Auton, fell further down the slope than intended, being injured in the mishap. He nevertheless got back to his feet in the same take, as planned. Letts requested that a sequence near the story's ending, in which Yates yells to the Doctor, "We've got him now!", be reshot because Franklin's performance was too over-the-top. Franklin was grateful for this. On the first day of filming, Katy Manning injured all the ligaments in her foot when jumping out of a car and running across a quarry. She also formed a fast bond with Barry Letts, as she was fond of the animals used in the serial. Nicholas Courtney was also ill on the first day, so was replaced by a double in those quarry scenes. Cast notes Harry Towb, who plays McDermott, had previously appeared in The Seeds of Death (1969). Michael Wisher, the young Rex Farrel, had also done uncredited voice work on Seeds, and had previously appeared in The Ambassadors of Death (as the TV News anchorman) and, later, Carnival of Monsters (as the machiavellian politician Kalik). He went on to do various Dalek voices (in Planet of the Daleks and Death to the Daleks), and became well known as the first actor to play the evil