Yu-Gi-Oh! Duel Monsters S01 E95 The Tomb-Keeper's Secret

"It's time to duel!"

As Marik’s evil grows, Ishizu reveals the secrets of her bloodline: How did Marik transform from a kind child into a power-hungry tyrant out for world domination? Can Yugi save Marik from the edge of darkness, or is he already beyond salvation?