

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...
Yves Boisset
Marcellin

Jean Bouise
Dr Rosenfeld

Loredana Nusciak
Marcella Mostri

Jean Bouchaud
Le commissaire Melin

Henri Poirier
L'automobiliste

Roger Ibáñez
L'agriculteur