Summer 1900: Leo turns 13. He’s the guest of Marcus, a wealthy classmate, at a grand home in rural Norfolk. Leo is befriended by Marian, Marcus’s twenty-something sister, a beauty about to be engaged to Hugh, a viscount and good fellow. Marian buys Leo a forest-green suit, takes him on walks, and asks him to carry messages to and from their neighbor, Ted Burgess. Leo is soon dissembling, realizes he’s betraying Hugh, but continues as the go-between nonetheless, asking adults naive questions about the attractions of men and women. How does innocence end?