Howe

Captain Kirk Armstrong

Gris

Inspector Kellog

William Dennis

Bob Hamlin

Eddie Daniels

Dr. David Lynd

Rusty

Larry Kent

Gregg

Bob Reid

Ping-Pong Player (uncredited)

Policeman (uncredited)

Tim Sawyer

Party Guest (Uncredited)

Frederick 'Fred' Garth

Cole

District Attorney Don Blane

Duke Mallor

Sgt. Dick 'Rusty' Manson

William Flynn Hitchcock / Bill Flinn

Cmdr. Don Winslow

Buddy Brower

Buckskin Billy Burke

Lieutenant

Jimmy Williams

Comdr. Don Winslow

Reef (uncredited)

Strangler (uncredited)

Dick Starr