Five people on a hot summer evening train to Bath: a stout matron, a kilted Scot and his fiancee, a scantily-clad publicist and a drowsy book-reading bachelor. murder is a web of deception, high-class prostitution, vanity, adultery, ambition and death. Detective Inspector James Boswell Hodge Leonard and his sergeant, the intriguing Madelaine Jack. To Leonard, this is much more than a murder case. For he was the fifth person on that train.