Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.
Rod Cameron
as Rex Bennett
Roland Got
as Chang Sing
Constance Worth
as Vivian Marsh
Nino Pipitone
as Oyama Haruchi
Noel Cravat
as Ranga
George J. Lewis
as Lugo
Maxine Doyle
as Marie [Ch. 8]
Donald Kirke
as Muller - Pier 17 Thug [Ch.1]
Ivan Miller
as Pier 17 Customs Inspector [Ch.1]
Walter Fenner
as Williams - Financial Agent [Ch.1]
C. Montague Shaw
as Prof. Nicholson [Ch. 3-4]
Harry Burns
as Tony Mills [Ch. 4, 12-13]
