Later, it transpired that Frank had been in a car accident, as a child. He’d struggled with anxiety ever since. Laura took this information, and thought about swapping it for her own story, the story of Bobby, and the letters, and X, and the codes, and her missing back molar. But she didn’t. Even when they married, she didn’t. Even when, red-faced and roaring, she pushed out her beautiful baby boy, and called him Robert, and marvelled at his white-blonde hair. Still, she said nothing.

