90s movie where girl gets murdered in a crawlspace

As bodies begin dropping around the Hollywood set of STAB 3, the third film based on the gruesome Woodsboro killings, Sidney and other survivors are once again terrorized by another Ghostface killer.

Alexis, Sylvia and Ellen are a trio of legendary scream queens. After the head of a motion picture studio invites them out to a very special screening in exchange for the possibility of a lead role in an upcoming horror film, the three women slowly become suspicious... not only of their circumstances, but also each other. They begin to realize that the horrific footage they are watching might be real and that they might be trapped in the deserted studio with a bonafide killer.