Most of the cases of Guido Guerrieri, the defence lawyer hero of Gianrico Carofiglio’s tales from contemporary Bari, start on a bit of a downer. The latest to appear in English, The Measure of Time, is no exception. Guerrieri, in many ways the author’s alter ego, is called on by an old girlfriend who wants him to help in the near hopeless case of her son’s appeal against a murder conviction.