When Emma Brauer is blamed in the mercy killing of her aged father, Robert Brauer, Paul Madriani steps in to defend her. Insisting she’s innocent, Emma tells Madriani about a package sent to her father by a fellow World War II veteran, containing only a key and a slip of paper. Emma fears that it is connected to her father’s death and that his real killer is still out there…

Driven by the belief that she’s innocent and might be right, Madriani digs into Robert Brauer’s military history. He discovers that other members of Robert’s army unit have also recently died-under suspicious circumstances.

Madriani uncovers a trail leading to a mysterious talisman-a feared Nazi relic known as the ‘Blood Flag’. Soaked in the blood of a fallen Nazi follower, the flag was displayed by Hitler in ceremonies until it went missing at the end of the war, turning it into a historic prize. Racing to locate the artifact before it falls into the wrong hands, Madriani is in for the fight of his life.