Japanese spies attempt to subvert America's war effort; G-Men attempt to thwart their plot.
Rex Bennett
Chang Sing
Vivian Marsh
Oyama Haruchi
Ranga
Lugo
Marie [Ch. 8]
Muller - Pier 17 Thug [Ch.1]
Pier 17 Customs Inspector [Ch.1]
Williams - Financial Agent [Ch.1]
Prof. Nicholson [Ch. 3-4]
Tony Mills [Ch. 4, 12-13]
James Kennedy [Ch. 12]
Harrison J. Caldwell [Ch. 5]
Capt. Gorman [Ch. 12-13]
Fuji - Escaped Japanese Spy [Ch.2]
