This episode was the first TftC I had ever seen, and I've always been able to remember it even if I'd seen it only once.
Basically, three sisters find the old monkey's paw, and when one wishes for a fortune she winds up getting killed for it, until the other sister unintentionally uses the paw to reveal what really happened. To get revenge, she beats the paw at it's own game and gives the final wish to their dead sister, who comes back to get her revenge on the sister who killed her. A classic which survived as a type of rebooted sequel for the Wish You Were Here story from the original movie.
