In a flashback scene, a young boy is laying in bed when a man removed the cover and is trying to touch him under his pyjamas, but he escapes before anything happens.
We see the possessed 14-year-old girl (Linda Blair) violently and repeatedly stick a cross into her crotch in a masturbatory fashion (we do not see the actual penetration but do see a lot of blood afterwards). She then pushes a woman's face down to her crotch.