Bon Voyage (2006)

Neil and Elizabeth embark on a family camping trip in France, only to be persistently pursued by the overly friendly couple, Simon and Linda. Initially, Elizabeth feels uneasy about the pair, but their discomfort escalates when they repeatedly spot Simon and Linda's campervan tailing them. The tension heightens when a young boy goes missing from the campsite, leading the family to uncover a chilling truth: the couple poses a far greater threat than mere awkwardness, revealing their sinister intentions.