F.B.I.

The Navy Spy Murders – A Japanese spymaster has left a trail of bodies in his quest to uncover the Navy’s secrets and Special Agent Dan Fowler of the F.B.I. has been called in to stop the deaths as well as the flood of stolen secrets.

The Harbor of Death – Strange things are happening at the port. Fear has become part of the longshoremen’s daily routine. ‘Accidents’ have become frequent. Dan Fowler of the FBI goes undercover to get to the bottom of it.

Men of Treason – Dan Fowler, Ace of the F.B.I. Battles to Blow the Lid Off a Racket That Threatens Our Nation’s War Effort—and Teaches Traitors Who Gamble on American Lives that Justice Holds the Trump Hand!

Give ‘Em Hell! – A trail of murders and kidnappings of young women lead Dan Fowler, ace man-hunter of the F.B.I. to a ‘good town’, a town entirely controlled by criminals.