Who killed Sydney's mom in Scream?

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Tags

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2. #least
3. #roman
4. #series
5. #before
6. #murderers
7. #trace
8. #films
9. #making
10. #story
11. #bridger
12. #integral
13. #motivation
14. #their
15. #sidney
16. #roberts
17. #somewhat
18. #scream
19. #mother
20. #while
21. #prescott
22. #antagonist
23. #start