 Morsell found it challenging to film a scene near the end of the game , in which Adrienne is pleading with Don while getting strapped into the chair with a guillotine overhead . Several different versions of the scene had to be filmed , and Morsell said it was difficult for her to work up the genuine emotion she needed take after take . The torture devices featured in the game were scale models made by local craftsmen . During one scene , the mansion roof starts to collapse , causing beams and chunks of debris to fall around the actors . To achieve this , the crew built lightweight beams out of hollow cardboard , which had to fall in the correct sequence . They normally had two grips on set , but needed six for this scene , and Wolfe used friends who were visiting from out of town to help throw the props from ladders , boxes and scaffolding . In another scene , Adrienne crawls along a water pipe that breaks . To film the scene without damaging equipment , the crew built a giant plastic box with a plastic tray underneath for the shoot . Three hoses ran through the pipe so water would spray in multiple directions . At one point in the film , Carno lies in the hospital bed after having just survived a fire , his face wrapped in bandages with blood leaking through . During filming , Miano spontaneously sat up and started singing Al Jolson songs , making the crew laugh hysterically . 
