Julie Ballenger has spent five years in a psychiatric clinic. Leaving the clinic apparently cured, she is hired by a wealthy industrialist, Mostri, to work as a governess to his young nephew, Thomas. The boy is heir to a huge fortune after the recent death of his wealthy parents who died in mysterious circumstances. During a visit to a park, Julie and Thomas are kidnapped at gun-point and driven away to deserted quarry. The two hostages manage to escape, but are closely pursued by an armed killer...
Marlène Jobert
as Julie Ballanger
Tomas Milian
as Thompson
Thomas Waintrop
as Thomas Mostri
Michel Peyrelon
as Walter
Michael Lonsdale
as Stephane Mostri
Victor Lanoux
as Georges
Antoine Saint-John
as Marcellin
Jean Bouise
as Dr Rosenfeld
Loredana Nusciak
as Marcella Mostri
Jean Bouchaud
as Le commissaire Melin
Henri Poirier
as L'automobiliste
Roger Ibáñez
as L'agriculteur
