Dishonored QuakeCon preview
Now that I've rewatched that video, it finally hit me: That alarm sound was so reminiscent of something, but I couldn't figure it out where I heard it before....it was in Sanitarium, the very first level.
Damn, I can identify a specific sound source from a 14 year old game, but I can't even remember the birthday of my own aunt. Priorities, I guess.