London, 1926: Henry Twist’s heavily pregnant wife leaves home to meet a friend. On the way, she is hit by a bus and killed, though miraculously the baby survives. Henry is left with nothing but his new daughter – a single father in a world without single fathers. He hurries the baby home, terrified that she’ll be taken from him. Racked with guilt and fear, he stays away from prying eyes, walking her through the streets at night, under cover of darkness.
But one evening, a strange man steps out of the shadows and addresses Henry by name. The man says that he has lost his memory, but that his name is Jack. Henry is both afraid of and drawn to Jack, and the more time they spend together, the more Henry sees that this man has echoes of his dead wife. His mannerisms, some things he says … And so Henry wonders, has his wife returned to him? Has he conjured Jack himself from thin air? Or is he in the grip of a sophisticated con man? Who really sent him?