Compared is the cut US tape by Artisan (R-Rated) and the uncut DVD by Anolis (unrated).
49 seconds are missing in 10 scenes.
For receiving a R rating the well made and thrilling movie by Dario Argento had to be cut in almost all scenes containing gore. Beside the R-Rated version, an unrated version by Artisan was also released in the USA.
When Angela is grabbing for the brake, two of her fingers get chopped off and fall on the floor. She screams because of pain and holds her hurt hand from which a lot of blood is spurting around. The killer tries to stab her again, but she manages to turn away.
The killer stabs the knife into Amanda's neck. He pull sit out again and one can see blood coming out of her wound.
The flute is rammed into Giacomo's mothers throat. There are some additional takes of Giacomo as small child who has to see the whole act.
Beppe is knifed by a pen.
Again a stab into his head.
Again some stabs. The last one is done in a close-up.
The killer brutally pushes the woman's face against the wall. She loses some teeth and her bloody mouth can be seen in two takes.
The ballerina's head rolls over the floor.
Leone receives a bloody headhsot.
Leone falls down with his shot face.