The Sea Wraiths — Sean Ellis

Cargo ships are mysteriously disappearing on the high seas. Dozens of men and millions of dollars worth of cargo have been erased from existence. Despite her concern over the long absence of Secret Agent X, Betty Dale, star reporter of the Daily Herald, cannot resist the lure of adventure and sets out to discover the secret of the shadowy villains known as the Sea Wraiths. Meanwhile, in the City's organized crime underworld, Nazi agents are hatching a plot to turn New York's capos into foot soldiers for the Third Reich, and threatening a quiet peace that has kept the streets free of violence. Will Secret Agent X emerge from hiding to thwart the machinations of Nazi spies? Or will he rescue his beloved Betty Dale from the clutches of….The Sea Wraiths!