At the end of a terrible war, a woman painted the door to her house red to welcome her husband home from the Front, but he never returned. Two years later, in the English summer of 1920, she lies lifeless behind that door, savagely bludgeoned to death. In London, a man suffering from a mysterious illness goes missing, and his family members offer conflicting accounts of one another's whereabouts at the time of his disappearance. Then, suddenly, he reappears, miraculously recovered, offering no clues to the puzzle or to the reason behind his brothers' and sister's silence and rage. Now Inspector Ian Rutledge, still haunted by the battlefield's horrors, must solve two possibly connected mysteries. He must uncover the family secret that nearly drove one man mad, and bring a ruthless killer to justice.