Charas makes arrangements with the doctor to provide a police nurse to attend to Helene.

She returns to the couch and more questions from Charas. She registers relief when she finds it on a lampshade and it is only an ordinary fly. She is polite and answers all questions except one-WHY. She is very calm and volunteers, 'I killed my husband, Andre Delambre, about half an hour ago in the hydraulic press shed.' She admits to killing him, but when asked why she is adamant, 'I cannot answer that question.' She provides specific details of the crime, then offers Charas coffee. They enter the living room to confront Helene Delambre.

Ejoute (an uncredited Eugene Borden), the family doctor, reports that she is calm and admitted to the crime. Emma (Kathleen Freeman), the housekeeper, meets them at the door. Francois and Charas go to see Helene at home. Francois positively identifies his brother based on a scar on his left leg-war wound. It is noted that the press was set to zero and single strokes. Francois raises the press so what is left of the body can be removed. As Charas and the police examine the crime scene, an ambulance team collects Andre's body. He reports the crime, then waits for Charas to collect him at his home. Francois calls an acquaintance at the Anthenium Club, a fellow member, Inspector Charas (Herbert Marshall). I need your help.' Francois thinks it is a cruel joke but changes his mind when Helene breaks down sobbing and implores him to, 'Call the police and come quickly.' Before he can leave his office, there is another call, this time from Gaston at the factory. She calmly tells him, 'Francois, I've killed Andre. A phone rings in the home office of Francois Delambre (Vincent Price). A body lays crumpled on the floor next to the press. He approaches the press and notices, in horror, that it is covered in blood. Gaston sees a smartly dressed woman, who he later recognizes as Helene Delambre (Patricia Owens), stare at him in surprise. He hears the sound of a hydraulic press starting. A cat, Satan, is picked up by the night watchman, Gaston (an uncredited Torben Meyer). The opening scene is at night, outside the factory of Delambre Freres Electronics in Montreal. We zoom in progressively until the hole fills the screen and a fly crawls into frame.

The 1958 version of The Fly, written by James Clavell, based on a short story by George Langelaan, opens with title and credits shown over a screen with a small hole.

The Fly by George Langelaan