Joseph Muller is a detective of the same caliber as Sherlock Holmes, Hamilton Cleek and Inspector Clouseau (of Pink Panther fame) and, like all of them he has his flaws. It isn’t the arrogance of Holmes nor is it neither the simplicity of Cleek nor the bumbling luck of Clouseau but Muller’s great fault is sympathy for his prey. When a young woman jumps from a window to her death, the coroner doesn’t hesitate to declare the death a suicide. This conclusion doesn’t fit into Muller’s findings and he vows to solve the case no matter how long it takes. When a certain murder is committed later, the Imperial Austrian Police call this detective in hoping he can solve the case. The case is unique in the fact that the victim is shot with a bullet of pure gold.