"Teen-Age Hoodlums Living for Kicks!"
A neighborhood is terrorized by group of young juvenile delinquents called The WolfPack. When a young father's infant child is seriously injured because of the WolfPack, he decides that the police aren't working fast enough to catch the ones who hurt his baby and sets out to infiltrate the gang himself and mete out the punishment they deserve.
Police Capt. Tom Lynn

Sam Bennett aka Bill Holland

Anne Bennett

Tess

Marty aka Ignatz

Matt, Police Detective

Jamie Allison

Frank
Pete Johnson (as Joseph Turkel)

Willie Hanson

Pop (as Terence DeMarny)

Himself, Pre-Title Prologue (as Senator Estes Kefauver)
Miss Lovett

Gas Station Attendant

TV News Broadcaster (uncredited)