Eh. When I saw the thread title I immediately thought DEATHTRAP, but I see you've already covered it.
(A note on that, though. Maybe everybody else on Earth is already aware of it, but DEATHTRAP is dated and only works as a period piece. I say this because I was in a production of it back at the "turn of the century", and our director only saw it as a contemporary piece. There we were stuck on stage trying to present our lack of computers and "shockingly taboo" homosexual storyline as current to our audience. They were not fooled.)
And no one grew into anything new, we just became the worst of what we were."