All six feet and four inches of his body came to life, writhing against the restraints and what looked like a thousand invasions of his orifices and skin. Then his head reared back, and his eyes swung open on me. The pupils were almost nonexistent, the irises sea-green with flecks of black. His eyes stayed open only for the briefest instant, focusing loosely on mine before falling shut. But my God, what an instant.
Something about this scene is almost terrifying. I like how he later describes his brother as a madman, and I feel like this works so well after the author really hammers home how essentially dead his brother was. Especially because he "comes back to life" at the mention of his brother's name.