They let him choose his last meal. He got about halfway through the burger.

The camera looks straight down at him in the chair, and he's staring right back up at it. I wanted the horror to come from his face more than from gore: teeth clenched so hard they might crack, foam pushing through them, a nosebleed just starting, one eye rolling off to the side while the other one stares at you. The plate on his lap is the detail that gets me, because an hour earlier he was just a man eating a burger.

Rendered in blender cycles. Glow, smoke and colour grade added in post.