The Fly

In the Delambre & Brother factory, a woman, Helene Delambre, has killed her husband, Andre, a scientist of genius. She crushed his head and his arm under a hydraulic press.

Inspector Charas is leading the inquiry. Nevertheless, Helene doesn't deny the murder charge. She seems quiet, apaise and happy by the death of her husband. She finds consolation from her brother-in-law, François Delambre, who asks her for some explanations...