Blackwell Unbound

Blackwell Unbound is a 2007 graphic adventure game developed and published by Wadjet Eye Games. It is the sequel to "The Blackwell Legacy", and the second entry in the "Blackwell" series.
Plot.
The second game is a prequel to "Legacy" and follows the investigations of Rosa's aunt Lauren Blackwell and Joey back in the 70s. They investigate two ghosts – a murdered saxophone player and a murdered woman haunting a construction site of her old apartment building. While investigating the two seemingly unrelated incidents, Lauren discovers that both ghosts have been murdered by the same elderly, homeless woman that calls herself The Countess. She claims that she is a medium like Lauren and is also helping the people move on. But she is in fact mad and is killing them. The duo tries to catch her, but she escapes. Puzzled by The Countess' claims about being a medium, despite the obvious lack of a spirit guide following her, they discover that she is using New Yorker journalist Joseph Mitchell as a spirit guide substitute and kills whoever he writes about. Mitchell eventually made the connection himself, and stopped writing altogether out of fear of getting anyone else killed. Lauren then convinces Mitchell to write about her to lure The Countess out of hiding. The plan works and she arrives at Lauren's place to kill her, where she is overpowered and Lauren is forced to kill her. At the end of the game, Lauren decides to get in touch with her brother again, despite Joey's misgivings about it.
Development.
As with "Legacy", "Unbound" uses the Adventure Game Studio engine. "Unbound" was originally supposed to be a flashback sequence in the next game, "The Blackwell Convergence", but it grew so large that it became a game in its own right. 
The story features a real person as a character: writer Joseph Mitchell of the New Yorker.
The game was released on September 4, 2007.
Reception.
The game was nominated for Best Story and won Best Music in the AGS Awards for games released in 2007.