Agent Trouble by Jean-Pierre Mocky

6.04

Amanda Weber is a museum employee. Her nephew, Victorien, who feels that wild animals should not be kept in zoos, while hitchhiking saw a mysterious bus with 50 dead tourists that later was found by autorities at the bottom of a lake. When Victorien gets in very serious problems due to what he saw Amanda seeks to find out what happened and soon also becomes a target.