How did Littlefinger betray Ned Stark?

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Tags

1. #assassination
2. #dagger
3. #valyrian
4. #joffery
5. #catspaw
6. #assassin
7. #betrayed
8. #steel
9. #executed
10. #catelyn
11. #belonged
12. #littlefinger
13. #causing
14. #stark
15. #baelish
16. #attempted
17. #tyrion