The Vanishing (Spoorloos)

Rewatched The Vanishing (Spoorloos) - i.e. the 1988 Dutch original - last night. It is definitely a classic in its genre of "psychological thriller".

You went with your girlfriend on an overseas trip. She vanished without a trace when you stopped briefly at a petrol station. And after 3 long years, you are still putting up posters around the region seeking her whereabout. Frankly, you don't believe she is still alive, but you have the moral obligation, and a strong curiosity, to find out what exactly happened to her.

When the abductor appears before your eyes and admits that he did it, what would you do? Beat him to death or turn him to the police (knowing that there is not enough evidence against him)? What if he offers to tell you what exactly happened if you just follow him back to the crime scene? Having told you how he drugged her unconscious at the petrol station, he insists that you should also be put unconscious if you want to know what happened to her after that. Would you do such a crazy thing? Do you really want to know the "truth" so bad?