Highlander: The Animated Series (1994)

S2E24 Tricks of the Mind

Fleeing from Arak's troops, Ramirez suffers a severe fall that leaves him with amnesia. Without any recollection of his pledge or Quentin, he decides to confront Kortan directly. Seizing the opportunity, Kortan plots to eliminate two threats at once by forcing Ramirez to face off against Quentin.