Could some one please help me, I can not remember the name of this movie to save my life. It played on hbo in the 1990's. Its about this brainwashed who is woman married against her will. Her and her husband, older man, live in a cabin in woods when stranger shows up. They have an affair and they try to escape ,after husband turns more phycho than before, in a green truck. That's all I remember, what's the name of the movie ?

Undertow (http://www.imdb.com/title/tt0118032/)

No, that's not it, it was from the 90's, thanks anyway

Oh man I'm sorry, I didn't click your link, there is another one by that name made in 2004... thanks man, I have been trying to find that movie for years! My wife thought I was crazy that I didn't actually see it !

Glad to help.