help finding an episode?

I watched an episode as a kid that freaked me out so badly that I never wanted to watch GA again. Morbid curiosity has the best of me, and I need to find it.

This was April 2011 (old I know), and might have been a re-run. I believe it was a mansion or house. But I remember the opening scene/backstory was about a man who was woken up by something outside of his bedroom door. He looked through the lock and saw the Devil standing there and then he died three days later. I remember the setting being this very ornate house and I think they had a woman with them kind of showing them around (?? Maybe)

I genuinely don't remember much else. I know for a fact that this was the opening story though, as the three days later thing plagued my child mind for YEARS. If anyone has any idea