The short story included in pre-orders of the Knave of Diamonds hardback edition is also included in the audiobook edition of this novel (no pre-order required). The bonus short story "Two Kids on a Grift" features Uncle Jake, Mary Russell's ne'er-do-well uncle who comes back into her life in Knave of Diamonds. Uncle Jake has made a career out of swindles and scams. So when he spots a couple of kids on the street one day fleecing passers-by in a clever game of three-card-monte, he needs to take a closer look. Why do the kids remind him so much of his niece and her brother … ?