Synopsis
Mike thinks he's hit the jackpot when his girlfriend Nancy's kid brother, who they call Genius, creates a growth compound that results in animals growing to huge proportions. A group of delinquents led by Fred has come to town and when they get their hands the goo, as Genius calls it, their giant size make them unstoppable. While Genius tries to recreate the formula, Mike and other teenagers in town, serve the giants. Genius simply can't reproduce the formula but fortunately comes up with the next best thing.
Director
Cast

Tommy Kirk as Mike

Johnny Crawford as Horsey

Beau Bridges as Fred

Joy Harmon as Merrie

Robert Random as Rick