Martin is, indeed, pulled off balance, but he keeps his grip on the knife and once on his back, uses the leg Jeff didn't grab to kick Jeff in the face.

Then he scrambles to his knees and makes his way back over to Jeff, driving the blade deep into his abdomen, just above his navel, holding it there a moment before giving it a twist.

"By the time the contents of your colon get around to poisoning you, I'll have had my fun," he says. "So don't worry. This wound won't kill you." He gives the knife another shove, deeper. "You'll only wish it did."