 But when the body is discovered, Archie is detained by Captain Barrow, the bullying local head of the state police, and is imprisoned by the authorities as a material witness when he refuses to reveal what he knows.The next day, Wolfe secures Archie's release with the promise to that he knows who the murderer is and will soon expose him to the authorities.To Archie, Wolfe admits that despite knowing the murderer's identity, the evidence that will enable him to prove it has been efficiently destroyed.