Update: Square Enix has confirmed the game will be for Xbox 360, PlayStation 3 and PC, and is scheduled to release in early 2014.

Square Enix kicked off its Murdered: Soul Suspect promotion last week with an alternate-reality game. Most ARGs end with some kind of big reveal, and Murdered fulfilled that criteria with a teaser-trailer that gives us a better idea of the game's plot and themes.

The ARG asked the question, "What is the hardest case to solve?" The answer, as given in the trailer (via Joystiq), is: "The hardest murder to solve is your own." So as you may have suspected from the promotional materials or title, you're apparently a private eye ghost.