The Case of the Brilliant Berserko C.O.P.S. : Season 1 Episode 22

Berserko stole a special headband that made him very unusually intelligent when he puts it on his head. In this new form, Berserko makes plans to intelligently trap the C.O.P.S. team at his amusement park hideaway while inciting Dr. BadVibes' jealousy of his new-found brilliance.