After a meeting with Boone's widow, where she confirms that Phoebe did indeed possess the cylinders, Wolfe takes the unprecedented step of terminating his contract with the NIA and returning the group's $30,000 fee. As this removes the protection he has received through the status of his clients and will begin a barrage of police and media interest in him, he fakes a mental breakdown in order to hold the police off and buy time until the cylinder is found. Before the police can expose his deception, Wolfe realises that the only place Phoebe could have hidden the cylinder and known it was safe was Wolfe's own office. He thus has Archie, Fritz and Theodore search the room for the cylinder, where it is found concealed in a bookcase. When played, both Wolfe and Cramer are vindicated; the murderer is revealed to be Alger Kates, who was bribed by Don O'Neill to pass on confidential BPR information and was exposed on the cylinder as a traitor. Having heard the cylinder, Phoebe discovered his guilt but revealed her knowledge to Kates when after pressuring him to return numerous items, possessing sentimental value to Boone's widow, that were stolen from the corpse to fake a theft.