Daniel Conway is involved in a vicious proxy war with Warner Griffith for control of an oil company. Conway's secretary, Rose Calvert, is spying for Griffith. When Rose is found dead, Conway fears he's being framed for murder and approaches Perry at a bar association dinner and asks for his aid. Perry at first believes Griffin to be the guilty party but he has an ironclad alibi. Then another witness emerges who has a photographic memory and can identify people by their shoes. (thetvdb.com)