up once, and right now, it is so small as to be invisible. The third summoning, however, could signal the end of the experiment, and the world. The Master summons up Azal again and demands to be given the Dæmon's power, but Azal warns him that he is not the Master's servant. Azal says on his third appearance, he will decide if Earth deserves to continue existing. If so, he will give it to the Master. Azal then vanishes in another heat wave. The Doctor is captured by a mob of villagers working for the Master. They tie him up to a maypole and plan to burn him alive, but with the help of Miss Hawthorne and Benton he escapes. In the Church cavern Jo and Yates watch as the Master summons Azal one last time. They try to interrupt the ritual but are taken prisoner. As Jo is prepared as a sacrifice to Azal, the Brigadier manages to get through the heat barrier and enter the village. The Doctor manages to avoid Bok, who is guarding the Church and gets into the cavern, where the Master is expecting him. Outside, UNIT troops are held back by Bok. The Doctor and the Master both try to appeal to Azal but for opposite reasons. The huge, devil-like figure decides to give his power to the Master, and fires electricity at the Doctor to kill him. However, Jo, steps in front of the Doctor, asking Azal to kill her instead. Azal is unable to comprehend this illogical act of self-sacrifice, and his power turns against him, destroying himself and the Church. The Master tries to escape but is captured by the UNIT troops and taken away. The Doctor, Jo, Miss Hawthorne and the UNIT team join the villagers in their May Day celebrations. Production The Dæmons began life as an audition scene for the companion Jo Grant. The audition sequence went on to be written into episode four. Producer Barry Letts was keen to write for the show and decided that a story dealing in black magic would be interesting as well as frightening. Script editor Terrance Dicks had reservations however, stating that people may view it as Satanist, and so it was reworked as strictly scientific with occultist themes. The Master was originally intended to worship the demon in a church set, standing on an altar. However, owing to fears that