MAP24: The Haunting (called Residence Quarters on the TeamTNT website, and Residence Quarters -- The Haunting on the official secrets page) is the twenty-fourth level of Icarus: Alien Vanguard. The level is set within the residence quarters of the exploration cruiser, Icarus, as well as in entertainment facilities on the ship, including a nightclub and a movie theater. It was designed by Gary Gosson, and uses the music track "Ghost in the Machine" by David "Tolwyn" Shaw. It is one of a few Doom II levels which feature intentional ghost monsters, created by having an Arch-Vile resurrect a monster who has been crushed.