Calum Macpherson

Camelot's legendary tournament has only one rule: there are no rules. As the mythic city fills with terrifying warriors, they are joined by Gilli (Harry Melling) who despite his small stature has victory in his sights and he has a secret weapon to help him - magic. As Gilli begins to realise the full potential of his powers, Merlin finds himself torn. Not only is his new friend putting his own life in danger, but his actions threaten to rip apart the very fabric of Camelot itself. Can Merlin make Gilli see sense before its too late?

When an old flame of Gaius's arrives in Camelot, Merlin is pleased to see a different side to his curmudgeonly mentor. But after discovering she is under the influence of a Manticore, a creature from the Old Religion, Merlin has no choice but to tell his old friend of Alice's evil intentions. Blinded by love, the old physician refuses to believe Merlins story and the two friends fall out. With the King in danger and all signs pointing to Alice and her evil pet, Merlin must somehow make Gaius come to his senses before it is too late.