A study of an operation undertaken by the short-lived Nazi guerrilla group known as Unternehmen Werewolf, which describes how a team of five men and a woman were chosen in 1944 to kill a German mayor who was believed to be a traitor to the Nazi cause.

Werewolf is the study of an operation undertaken by the short-lived Nazi guerrilla group known as UNTERNEHMEN WEREWOLF. This group is part of an aspect of the Second World War which has been neglected by many writers, that of the German Resistance. The Werewolves were formed in November 1944, having been recruited and trained by SS Police General Gutenberger. Werewolf explains how the team of five men and a woman was chosen for "Operation Carnival", which was a plot to kill Franz Oppenhoff, the new mayor of Aachen, who the Germans saw as an American stool-pigeon and traitor. Werewolf skillfully recreates the atmosphere of unease that prevailed on both sides giving a distinct background to the action which is described in great detail.