Simon Nehan

New servant Cedric muscles in on Merlin's position as Arthur's right-hand man, and turns the prince against his loyal friend. Merlin is convinced the slippery newcomer is up to something, and his suspicions prove to be correct. Camelot has never been more vulnerable, but how can Merlin make things right when, thanks to Cedric, he might have lost Arthur's friendship for good?

Merlin stumbles across a secret chamber and accidentally releases a Goblin. The mischievous creature possesses Gaius, leading the once wise physician to develop a taste for gold, ale and magical jokes. With a suddenly bald King and a scourge of flatulence sweeping the royal household, can Merlin work out what is going on and banish the Goblin back to where he came from before any real damage is done?