George Sluizer’s The Vanishing (1988) is a chilling Dutch–French thriller about a man’s obsessive search for his missing girlfriend — and the unnerving banality of the man responsible. Adapted from Tim Krabbé’s novel The Golden Egg, it’s a masterclass in psychological tension and moral horror that influenced decades of European suspense cinema.

Från IMDB:
Rex and Saskia, a young couple in love, are on vacation. They stop at a busy service station and Saskia is abducted. After three years and no sign of Saskia, Rex begins receiving letters from the abductor.