"An unpleasant man in every respect, university professor Herbert Ungley is exceedingly vain. One morning, his landlady catches her cat coming in with Ungley's hairpiece between its teeth. It's clear something has happened to the old grouch, because he would never be caught without his toupee. Ungley is found in the yard behind his social club, with his head bashed in and his baldness plain for the world to see. Although the police are content to...