If you use Mr A's idea yea mate. Trigger box though, will just play the sound file when you enter. No need for a second body

But that wouldn't display subtitles, would it?
And detect life detects life, not dead bodies, I assume, yes? Meaning they'd see the standing person, then that would fade and when the player entered the room they'd be hunched on the table. It may not be 100% perfect, but I don't think anyone would realize or think it was odd.