The Dark Passenger is the demon sitting on your shoulder waiting to whisper in your ear the darkest and most peverse acts. He's inspired all the greats into their rampage of killings. Bundy, Dahmer, Ramirez, Gore, Gacy and even Dexter Morgan have all fallen prey to The Dark Passenger.
He can be manipulate his size and shape to his advantage. Seducing men and even women into his traps. The power of suggestion is strong however, that is just how far his powers go. He can only suggest people into the acts and provide them means. Such as a weapon or a place but The Dark Passenger cannot fire a weapon or even really touch and interact physically with his victim and their victims.
As he hides in the shadows his only real enemies are sunlight and good deeds. He cannot flurish in a town of good-doers or one tied close to their religion. However he still has plenty of space for his playground.
Who will The Dark Passenger strike next? Maybe you.... or maybe me....