Qwilleran's Siamese cat was a celebrity at the Press Club. Koko's portrait hung in the lobby along with Pulitzer Prize winners, and he was probably the only cat in the history of journalism who had his own press card signed by the chief of police. Although Qwilleran's suspicious nature and inquisitive mind had brought a few criminals to justice, it was commonly understood at the Press Club that the brains behind his success belonged to a feline of outstanding intelligence and sensory perception. Koko always seemed to sniff or scratch in the right place at the right time.