South Park: Season 8, Episode 13

8 - 13: Cartman's Incredible Gift

After sustaining a severe head injury, Cartman appears to have the power to see into the future. South Park detectives are quick to enlist his help in cracking unsolved murder cases and Cartman is more than willing to help, for a price. In the meantime, a group of licensed psychics cry foul when Cartman refuses to join their ranks.