As a tease for Mack’s new book, the gang reads passages from “Mack Maloney’s Haunted Universe, Volume 2.” What happens if you wear blue denim in North Korea? Who was the mysterious figure that spied on U.S. forces in Afghanistan but was only visible on NightVision? What is the largest UFO ever reported? What was the smallest? What happens when you get a text message from someone who is dead?