Dishonored-style Blinking! Silent Hill-style backstory! Sweet hats!.
Cards on the table time: I was ready to write off Airtight's Murdered: Soul Suspect as a paranormal novelty when I saw it in action last year. I mean, ghosts dressed like gigolos who can't walk through every wall because of *cough* afterlife criteria that have absolutely nothing to do with game balancing/techical concerns? Seriously, whatever.