Discover the fate of a pre-war theater group and their mysterious disappearance. The quest can be begun by finding a suspicious suitcase directly outside the Museum of History (Underworld) on the mall. It's just to the right of the door when entering the museum, next to the steps. There are several new locations and a couple of opportunities for a player home, along with a new quest. 

The navmeshes on the interiors are sparse - this should mean that the important parts of the quest can be conducted alone.