The Celestial Toymaker is the mostly missing seventh serial of the third season in the British science fiction television programme Doctor Who, which was first broadcast in four weekly parts from 2 to 23 April 1966. In this serial, the alien time traveller the First Doctor (William Hartnell) and his travelling companions Steven Taylor (Peter Purves) and Dodo Chaplet (Jackie Lane) are pitted against a powerful adversary called The Toymaker (Michael Gough). The Toymaker separates the Doctor from his companions to play the Trilogic Game, while Steven and Dodo are forced to win a series of seemingly childish but deadly games before they can be reunited with the Doctor and return to the TARDIS. Only the last episode of this story, "The Final Test", is held in the BBC archives; the other three remain missing. "The Final Test" has been released on VHS and DVD, and the story has been novelised. A fully animated version was released on DVD and Blu-Ray in 2024. Plot An alien intelligence has invaded the TARDIS and rendered the First Doctor invisible, leaving Dodo and Steven incredulous. They step outside into a strange realm where the Doctor reappears. They have come to the realm of the Toymaker, an eternal being of infinite power who sets games and traps for the unwary so that they become his playthings. The Doctor and the Toymaker have faced each other before, and the Toymaker abducts his old adversary to another place. The Doctor appears in the Toymaker's study, where he is given the Trilogic game, a ten-piece puzzle (similar to the Tower of Hanoi) whose pieces must all be moved and remounted in a 1023-move sequence. Steven and Dodo face different challenges. The first are two clowns, Joey and Clara, full of childish tricks and a dangerous game of blind man's bluff. The clowns are made to replay the game when it is clear they are cheating, and the second time round Joey loses his footing on an obstacle course and the challengers are transformed into twisted dolls on the floor. Steven and Dodo then venture down a corridor into another chamber with three chairs and a challenge from living playing cards, the King and Queen of Hearts, along with a Knave and a Joker. An adjoining room has a further four chairs, and Steven deduces that six of the seven chairs are deadly to sit on. Seven mannequins are provided to be used for testing on the chairs. The King and Queen play alongside them, and some of the mannequins are destroyed as seats are proven unsafe and eliminated. Dodo is nearly killed by a chair that almost freezes her into ice before Steven helps her stand up. The King and Queen are trapped when they sit in a chair which folds in on them. Steven and Dodo next meet the comical Sgt. Rugg and Mrs. Wiggs in a kitchen. They challenge them to hunt the thimble – the key to the exit door. Dodo finds the key inside the large pie which Mrs Wiggs was making. She and Steven depart and enter another room with a dancing floor. There they encounter the three mannequins not destroyed by the chairs, who transform into ballerinas and start to dance. At the far end of the floor is the TARDIS. Steven and Dodo get trapped as partners with two of the dolls and only free themselves by swapping their partners for each other. They pelt on to the TARDIS, but the police box is a fake. The Toymaker chooses Cyril the schoolboy to take on the Doctor's companions. Dodo and Steven find themselves in a vast game of hopscotch against Cyril, who slips on a triangle he has booby-trapped and is electrocuted. Dodo and Steven thus reach the TARDIS. In the Toymaker's study at the same time, the Doctor is at the final stage of the Trilogic Game. The three friends are reunited, with Steven and Dodo sent into the TARDIS for safety while the Toymaker challenges the Doctor to complete the Game. The Doctor realises that when he makes the move and the Game is won, the Toymaker's domain will disappear – and the TARDIS with it. He orders the last piece to move using the Toymaker's voice from inside the TARDIS, allowing them to depart while the Toymaker's world is destroyed. The Doctor explains what he did to Dodo and Steven, and the team commemorate their victory with a bag of sweets given to Dodo by Cyril. The Doctor puts one in his mouth and immediately yells in pain...