The Night of the Following Day (1969) on Netflix

Plot summary

A gang of four professional criminals abducts a wealthy teenage girl at a Paris airport. Their plan is to demand a ransom from her rich father, and they hold her prisoner in a remote beach house on the French coast. On the plane, the stewardess Vi tends to the girl; at the airport, Bud the chauffeur speaks to her and drives her away in a Rolls-Royce. At a junction, Leer joins them, and the girl realizes she has been kidnapped. Bud begins to have second thoughts and tries to shield her when Leer becomes violent. Bud must also deal with his own lack of courage and with Vi, whose drug use makes her unreliable.