In the fourth of the 'Palliser' stories, Trollope follows Phineas Finn's return to the dangerous world of Westminster politics. When his political rival is murdered, Phineas is thrown under suspicion and eventually finds himself standing trial at the Old Bailey. The situation is complicated by the presence of two women in his life: his old flame Lady Laura, whose estranged husband is determined to destroy Phineas's reputation, and the wealthy and enimgatic widow, Madame Max.