Justice League (2001)

S1E18 A Knight of Shadows (1)

In "A Knight of Shadows (1)," Morgaine Le Fey, the powerful sorceress, teams up with her son Mordred in a quest to find the elusive Philosopher's Stone. Meanwhile, the Justice League realizes they must enlist the aid of the demon Etrigan to stop Morgaine's dangerous plans. As tensions rise, the heroes face a formidable challenge in their battle against dark magic and the relentless pursuit of this legendary artifact.