Tiger Milk by David Garth

"No flies on Mr. Garth in this story of a lone-wolf fight against a Nazi undercover ring in the U.S. The playwright foreign correspondent under an alias is under suspicion of the heroine and reader alike for a good part of the book. A murder in with the heroine, Berkeley Britton, held there; clipper to America and Berkeley's continued efforts to get at the root of a fascist plot in a coming gubernatorial election; and finally the hero, Luce, and Berkeley cross paths when both trail the same man; attempted murder; kidnapping; and in and out of the dragnet, in a slick surfaced, well paced tale. Serialized in Cosmopolitan." - Kirkus Reviews