Dwain Kyles, owner of Epitome/E2 Chicago nightclub, was awakened by a phone call early Monday from his longtime business partner, Calvin Hollins. If it had been about a fight or some other disturbance, Kyles may have fallen back asleep. But Hollins was calling from the police station. By the time Kyles threw some clothes on and made it to his nightclub, the lifeless bodies were already stacked up at the door. "I couldn't get through it," he told me, explaining why it took so long for him to issue a personal apology to the families of the 21 people who...