Will J. White

as Silvano / J. Edgar Hoover (uncredited)

as Workman

as Cadet (uncredited)

as Vancouver Policeman

as Sgt. Stafford

as State Police Sergeant Bill Ames (uncredited)

as Highway Patrolman

as State Trooper

as Plainclothesman (uncredited)

as 1st Security Guard

as Officer (uncredited)

as Observer

as M.P. Sgt.

as Deputy D.A.

as 2nd Detective

as Guard

as Sergeant

as Lab Guard

as Ed Worth

as Guard

as Police Officer #1

as German Officer

as Agent Ed Coleman

as Guard