Can anyone tell me the name of this horror movie?

It was early or mid 90's and has three stories, one story was were this lady killed her husband for a necklace and was like crawling in his coffin to get the necklace and these huge rats were underground trying to eat her, then a story where a son comes back from the grave and is walking down the stairs and has... show more It was early or mid 90's and has three stories, one story was were this lady killed her husband for a necklace and was like crawling in his coffin to get the necklace and these huge rats were underground trying to eat her, then a story where a son comes back from the grave and is walking down the stairs and has an axe or something and he has a demons face, and the last story is where a scientist is working in the lab overnight on this artifact of a tiny creature, the creature comes to life and stabs the hell out of her and she gets possessed. Sorry if it's tl;dr. Any help would be appreciated thanks.
2 answers 2