CSI - Who Dunnit?

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Across
  1. 5. person who investigates a crimescene
  2. 7. people who saw what happened
  3. 8. someone that assited the criminal
  4. 9. detecting posions
Down
  1. 1. where the crime took place
  2. 2. objects or things used to determine the criminal
  3. 3. everyone has got their own on their fingers
  4. 4. place and reasoning of where someone was when the crime happened
  5. 6. Deoxyribonucleic acid