I am trying to remember the name of a movie I caught on HBO about 10 years ago. I think it was an 80s or early 90s film about a swinger wife who leads men into thinking she's into them. Then her husband takes and buries them in a tomb alive and watches them slowly die on camera.

The wife often plays tricks such as using a taser on her lovers and "doing it" in public spots.

One man (the main character) gets really into her and ends up getting buried alive by her husband. He eventually escapes though by digging out of the tomb and killing the crazed man.

Can anyone help me with this? It's been bugging me for years!