I was thinking that the ace of spades wasn’t necessarily something I would have associated with good luck. Quite the contrary: the card had been printed with a skull and crossbones inside the spade. I had seen it clearly. I like decks of playing cards. I have a lot of them. And I remembered that the double-sized black pip at the centre of the ace is often thought to resemble, even to have been inspired by, the spade used by an undertaker. The Americans deployed it as a weapon in the Vietnam War, dropping it on the bodies of the soldiers they killed in order to frighten the survivors.

