as Artist (uncredited)
as Jason (voice) (uncredited)
as Officer (line of men in sea) (uncredited)
as Flight Lieutenant J. F. Leggo, D.F.C.
as Peter
as Rupert
as Crewman (uncredited)
as Dutch Lieutenant
as British Sergeant
as Third Officer Charles Groves
as 1st Reporter
as Frank Mason
as Alvarez - racer
as Dr. Kenneth McColl
as Tommy Dykes
as Self - Commentator
as Narrator
as Commentator
as Dr. Peter Brady / Invisible Man (voice) (uncredited)
as Nick
as Dr. Peter Brady / Invisible Man
as Lieutenant John Wynham
