Orrie Cather, a private eye who had occasionally worked for Nero Wolfe, finds himself in jail for the murder of young Isabel Kerr who was obviously being kept and who was equally noticeably pregnant. Archie as legman must cope with Isabel's sister and brother-in-law who don't want Isabel scandalized in the paper, her rich benefactor who doesn't need publicity, her girlfriend--a nightclub singer in the know, and prime suspect Orrie. Wolfe uses math and memory to solve this one. Not his best but good enough for the Stout-hearted.
