The Face Of A Stranger by Anne Perry

Set in Victorian London, the story follows Inspector William Monk, who wakes up in a hospital with no memory of his past or identity. As he struggles to piece together his life, he is assigned to investigate the brutal murder of a Crimean War hero, Joscelin Grey. With the help of the compassionate nurse Hester Latterly and his own sharp instincts, Monk delves into the dark secrets of the upper class, uncovering a web of deceit, betrayal, and hidden motives. As he navigates the complexities of the case, Monk also embarks on a personal journey to rediscover who he truly is.