Ansel has never been afraid to say what's on his mind. He's always the first among his friends to speak up when something doesn't feel right. When the Hitler Youth first set up shop in Heroldsberg the year before, Ansel quickly made enemies of the chapter's arrogant leader, Hans. Of course, Ansel is also twelve years old, so he spends much of his time reading his favorite Dirk Goodly, Boy Detective novels and trying to make his friends laugh.

But more and more of his classmates have been swayed by Hans's tactics and the Youth organization is growing throughout the city. Ansel knows that Hans and his group are spreading false information--after all, Ansel's father is a journalist for the local paper and has been going toe to toe with Nazi propaganda for a long time.

Then Ansel's father goes missing right before a prominent Nazi leader comes to town. With the local police in the Nazi's pocket, can Ansel and his friends use their detective skills to find his father and thwart the Nazi's plans to suppress the truth?