Thomas P. Manning, businessman and chess expert, mysteriously shot in a locked room, dies clutching some chess pieces. Police are baffled, and finally abandon the case. Six months later, victim③⑨;s daughter Leah Manning, stung by a scurrilous book about the case, enlists the aid of Charlie Chan and Number ③ Son. 嗄dditional murders follow, leading to a climactic confrontation in a...Thomas P. Manning, businessman and chess expert, mysteriously shot in a locked room, dies clutching some chess pieces. Police are baffled, and finally abandon the case. Six months later, victim③⑨;s daughter Leah Manning, stung by a scurrilous book about the case, enlists the aid of Charlie Chan and Number ③ Son. 嗄dditional murders follow, leading to a climactic confrontation in a...