Ep 1. The Curse of Cornelius Sigan

Merlin season 2 episode 1, titled "The Curse of Cornelius Sigan," follows Merlin and Arthur as they are entrusted with overseeing the execution of a powerful sorcerer named Sigan. However, when one of Sigan's loyal followers manages to save his master's soul from Hell, Sigan returns to the world with a vengeance and the ability to possess others' bodies.

As Sigan seeks to re-establish his hold on the world, Merlin and Arthur must race against time to find a way to banish him back to the afterlife once and for all. Along the way, they come into conflict with a band of powerful sorcerers who seek to use Sigan's body-jumping powers for their own gain, as well as facing personal obstacles and challenges that threaten to derail their quest.

Filled with thrilling action sequences, twists and turns, and high-stakes drama, "The Curse of Cornelius Sigan" kicks off season 2 of Merlin with a bang. Fans of the show will be on the edge of their seats as they watch Merlin and Arthur fight to protect the kingdom from the forces of darkness and magic, and will be left eager for the next episode.