The fifth episode of Merlin Secrets and Magic focuses on the character of Lady Catrina, and what it takes to turn into the troll who is able to soften Camelot king's heart as explained by Sarah ...

Merlin Season 4 continues to follow the story of Camelot’s savior, Merlin. The third season ended with Merlin discovering Lady Morgana’s treachery. A year has passed since Morgana betrayed Arthur.