In this week’s Unshelved Book Club you’ll find books about gun guys, a “retured” Delta Force operator trying to stop a terrorist attack at a theme park, happiness, Yoko Ono, a vampire ballerina, a skinny teenager in the old west, that junk you could order at the back of old comics (but your parents probably didn’t let you), and a horror novel by two of the founders of the splatterpunk movement.