Nick Carter (Walter Pidgeon) Collection

Pat Evans is a German expatriate who is loyal to her new adopted home, the United States. A shadowy German bund operating in the Long Island area tries to recruit as the sophisticated but lecherous Andrew Hendon tries to physically coerce her into joining. While she is flying in the private plane of Cortland Grand, a rich friend of Nick Carter's, she knocks Hendon unconscious in self defense, but leaves him alive in a rear compartment of the plane. When the steward discovers the body, he finds Herndon stabbed in the throat by a nail file. Before the trip is over, the co-pilot is also stabbed to death. Luckily for Pat, one of the passengers on Grand's plane is famed New York detective Nick Carter. Although he is off-duty, the resourceful sleuth along with Beeswax, his bizarre sidekick, and beautiful Southern Chris Cross, a female gumshoe, breaks up a secret cell of Nazi saboteurs and FIfth Columnists.

A mysterious rash of cargo ship sinkings in Panama leads insurers Llewellyns of London to hire vacationer Nick Carter and his eccentric associate Bartholomew to investigate. Nick recognizes influential nightclub owner Al Taurez as a shady operator, but getting the goods on him depends on slick diversions involving the heavyweight champ of the Pacific Tuna Fleet, a Panamanian bombshell armed with American slang, a young couple in love and a whole raft of crooks and cutthroats.

Famed New York detective Nick Carter arrives incognito at a California airplane factory at the behest of owner Hiram Streeter. Despite seemingly thorough precautions, a gang of saboteurs and shadowy foreign agents are able to smuggle out the secret blueprints for innovative new planes and sabotage prototypes during testing. With the aid of eccentric detective Bartholomew and spunky nurse and female pilot Lou Farnsby, Carter is able to expose the fifth columnists as well as the traitors that are helping them.