In their quest to destroy the rebellion, the Combine raid a decrepit asylum suspected of harboring a communications outpost. The only thing standing in their way is the paranoid schizophrenic Patient #564, Dominic Crowley, who suffers from frequent delusions and has no problem with senseless violence.
A hallucination of a woman. It's a little more creepy in-game because of the laughter sound effect, but you get the idea. I'm not entirely happy with this effect because it's simply a little color correction and a screen shake, but it serves the purpose for now.