Who killed Robin's parents?

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Tags

1. #uncle
2. #killing
3. #broke
4. #batman
5. #paralyzed
6. #parents
7. #first
8. #sabotaged
9. #helped
10. #without
11. #zucco
12. #which
13. #trapeze
14. #survived
15. #grayson
16. #april
17. #justice
18. #cousin
19. #bring
20. #became
21. #routine
22. #while
23. #during
24. #robin