An Ellery Queen Mystery
When a circus rodeo actor is shot dead in the midst of his performance, it seems obvious that someone would have seen the perpetrator - or at least recovered the gun. When the investigation fails to turn up any evidence, the net of suspicion widens across the troupe of performers and the circus staff. Unluckily for the murderer, Ellery Queen is among the thousands that witnessed the crime, and he won't be satisfied until he discovers the truth. By the time he uncovers the necessary clues, Queen will expose both the killer and the hiding place of the weapon - the titular American Gun that fired the fatal bullet.