Mod:Fallout: The Frontier/Horror at the Frost Lion Resort

Horror at the Frost Lion Resort is a side quest

Find out what happened here. The quest begins upon picking up a Green Fairy Flyer on one of the bodies inside the resort, or by heading upstairs. To quickly complete the quest, enter the long hallway on the first floor and after some exploration, you will find stairs leading up. A room contains a panic room terminal; hack it and defeat Sundown. Violet Osborn can be freed, though the player may also set her collar to explode and kill her.