Rod Cameron

Character: Rex Bennett

Roland Got

Character: Chang Sing

Constance Worth

Character: Vivian Marsh

Nino Pipitone

Character: Oyama Haruchi

Noel Cravat

Character: Ranga

George J. Lewis

Character: Lugo

Maxine Doyle

Character: Marie [Ch. 8]

Donald Kirke

Character: Muller - Pier 17 Thug [Ch.1]

Ivan Miller

Character: Pier 17 Customs Inspector [Ch.1]

Walter Fenner

Character: Williams - Financial Agent [Ch.1]

C. Montague Shaw

Character: Prof. Nicholson [Ch. 3-4]

Harry Burns

Character: Tony Mills [Ch. 4, 12-13]

Forbes Murray

Character: James Kennedy [Ch. 12]

Hooper Atchley

Character: Harrison J. Caldwell [Ch. 5]

Robert Homans

Character: Capt. Gorman [Ch. 12-13]

Allen Jung

Character: Fuji - Escaped Japanese Spy [Ch.2]