Melbourne, 1886: boom-time. Two gentlemen climb into a hansom cab late one murky night. One man climbs out. The second man is dead. The victim's romantic rival, Brian Fitzgerald, is arrested for the murder but refuses to provide an alibi. His lawyer, Duncan Calton, and his wealthy fiance, Madge Frettlby, are forced to search for the truth themselves in order to save his life. Their investigation not only uncovers a trail of secrets and scandal from opium dens and brothels to the cream of society, but their revelation threatens to tear Madge's family apart. Based on the international best-selling novel by Fergus Hume, The Mystery of a Hansom Cab is now a stunning new telemovie with twists and turns to the very end.