When the prompter falls dead during the second act of Richard Wagner's Die Walk?re during a matinee performance at the Metropolitan Opera, as one can imagine, it causes quite a stir, especially when it is discovered that the deceased, a one time world famous Heldentenor has been poisoned. The detective assigned to the case, Lt. Quentin, finds himself immersed in the back stage drama of professional opera. His task is made more difficult when he...