The Devil by the Tail

When a marquess (Madeleine Renaud) and her granddaughter, Amelie (Marthe Keller), the owners of a formerly grand hotel in the French countryside, get desperate for business, they scheme to have cars sabotaged, so that the drivers and passengers are forced to stay at their accommodations. Things get livelier when Baron Cesar Maricorne (Yves Montand) arrives with a big secret and an even bigger sum of money. When he entrusts the marquess and Amelie with his stash, they aren't eager to return it.