This guy and his wife/partner were on a drive, she goes out of sight and is kidnapped. He looks for her for years and eventually finds out who kidnapped her. He speaks to the kidnapper and is told that if he wants to know where his wife/parner is he ill have to go through what she went through. He then agrees and amongst other things is buried alive and finds the dead remains of his wife/partner.

Can anyone please help me find out the name of this film. Its been bothering me for ages now

The Vanishing (1988) – Dutch-French film
A young man begins an obsessive search for his girlfriend after she mysteriously disappears during their sunny vacation getaway. His three-year investigation draws the attention of her abductor, a seemingly mild-mannered professor who, in truth, harbors a diabolically clinical and calculating mind. When the kidnapper contacts the man and promises to reveal his lover’s fate,


The Vanishing (1993) - IMDb
The boyfriend of an abducted woman never gives up the search as the abductor looks on.