The game's developers, Airtight Games, closed one month after this game's release.
There are references to other Square Enix published games sprinkled throughout the game. You can find a poster for Just Cause 2 in Rex's office, many desktops have the Deus Ex: Human Revolution pause screen as their wallpaper, and you can listen to people thinking about a game featuring a woman raiding tombs (Tomb Raider).
Abigail Williams is not a ficticious character. She was the first accuser of many in the Salem witch trials