The Face of a Stranger introduces us to William Monk, a detective with the police in London of . After recovering from a serious accident in a carriage, he finds he has lost his memory. He is assigned to investigate the brutal murder of an aristocratic Crimean war hero and in the process finds out more of his own past — and is terrified of what he sees. Did he commit this crime himself? During his investigations he meets Hester Latterly, a forthright young woman of middle class, who nursed with Florence Nightingale in Crimea…