Gaius: And yarrow. Edwin: My name is Edwin Muirden, and I have a remedy to cure all ills. Edwin: I might be able to help her. Gaius: Impossible. Give him his shilling! Uther: Gaius is the court physician. Gwen leaves. Geoffrey: Gaius! Gaius: I wish to see the court records from the time of the Great Purge. Uther: A symptom of the illness? Gaius: They were sorcerers. Uther: But? Gaius goes down the Tunnel Corridor to the Dragon's Cave with a torch. You tried to save Morgana. My choice is to leave. With your death, magic will return to Camelot. Edwin's spell throws an axe at Merlin, but Merlin stops it. Merlin: Uther's ill; the same thing Morgana had. Edwin said he used these to cure Morgana. His parents? One day.
Plan: A: Morgana; Q: Who falls ill with an unidentified brain disease that Gaius is unable to cure? A: Gaius; Q: Who is unable to cure Morgana's illness? A: A mysterious healer; Q: Who is Edwin? A: the cursed black beetle; Q: What does Edwin remove from Morgana? A: Uther; Q: Who retires Gaius? A: the new court physician; Q: What is Edwin's position in Camelot? A: court archivist Geoffrey; Q: Who did Gaius get to give him access to the records of Uther's purge of magic? A: sorcerers; Q: What were Edwin's parents executed for? A: an impossible choice; Q: What does Edwin's threat to expose Merlin leave Gaius with? A: the Great Dragon; Q: Who did Gaius consult with about leaving Camelot? A: Camelot; Q: Where does Gaius decide to leave after consulting with the Great Dragon? A: another beetle; Q: What does Edwin use to condemn Uther to an agonizing death? A: the day; Q: What does Merlin save? Summary: Morgana falls ill with an unidentified brain disease which Gaius is unable to cure. A mysterious healer, Edwin, proves that his 'remedy to cure all ills' seemingly helps her, but actually removes the cursed black beetle that caused the illness. Uther retires Gaius and instates Edwin as the new court physician. Gaius secretly gets court archivist Geoffrey to give him access to the sealed records of Uther's purge of magic, proving Edwin's parents were executed as sorcerers. Edwin threatens to expose Merlin if Gaius tells Uther, leaving Gaius with an impossible choice. After consulting with the Great Dragon, Gaius decides to step down and leave Camelot (calling Merlin the 'son he never had'). Edwin uses another beetle to condemn Uther to an agonizing death. Gaius returns at the last minute, but it takes Merlin to save the day.