No Choirboy

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Across
  1. 2. serious crime
  2. 5. important to the case
  3. 8. prison
  4. 11. legal proceeding
  5. 13. existing alone
  6. 16. to review one's case
  7. 18. clear of blame
Down
  1. 1. to look up to
  2. 3. science of mechanics
  3. 4. early release of a prisoner
  4. 6. protection
  5. 7. resistant
  6. 9. to send to another state
  7. 10. to question
  8. 12. a "do gooder"
  9. 14. strike repeatedly
  10. 15. payment for release of a prisoner
  11. 17. document specifying the facts