Spoorloos

Spoorloos (internationally known as The Vanishing ), directed by George Sluizer, is a 1988 Dutch-French psychological thriller that redefines horror through clinical, understated menace rather than gore or jumpscares. Based on Tim Krabbé's novella The Golden Egg , it is widely considered one of the most unsettling films ever made. The Vanishing (Spoorloos) (1988)

This is another of the many movies I first learned of from Bravo's 100 Scariest Movie Moments, where Mark Kermode described it as, Cody's Film, TV, and Video Game Blog THE VANISHING (SPOORLOOS) - What's in a Scene? Spoorloos