As Mairsil focuses on the knife, he recalls the scene in the back of the truck where he found the knife, replaying it as a montage of image-flashes, interspersed with scenes of flickering flames and the sounds of chains and pain. He smells brimstone, and blood, and urine, and tastes the girl's blood in his mouth. Her haunting voice comes back to him, taunting him.
"You can have power, if you dare, but I think you are weak."
In his vision, he sees himself killing the girl... not as he had in fact taken her life, but viciously, almost in a frenzy, stabbing and slashing and slicing. He watches himself carve symbols into the girl's flesh. Then the vision shifts... it is not this girl, but another, one he does not recognize, gagged, bound with her hands above her head... but not in the truck. In a room... this room, the one Mairsil is in right now. He sees himself as he carves the sigils into the flesh of her arms and abdomen, he feels the same thing he felt when he gained the knife. He watches her blood flow to the ground, but does not drink... he kills simply for the sake of killing.
Mairsil's vision fades, and he finds he is holding the knife, and has carved the sigils from his vision onto the surface of the table, and onto his arms and hands.
As the images fade from his mind, he hears the girl's voice once more. "The power can be yours, if you merely reach out and take it... let go of what you have been, and embrace what you can be."
Mairsil has inflicted 1 Lethal damage to himself in the grip of his mad vision.