Why did they kill M in Skyfall?

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Tags

1. #through
2. #producers
3. #demise
4. #revealed
5. #skyfall
6. #played
7. #killed
8. #tears
9. #veteran
10. #laughed
11. #london
12. #films
13. #actress
14. #lunch
15. #character
16. #being
17. #cried
18. #dench
19. #chief
20. #seven