WHODUNNIT?

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Across
  1. 1. same family that: choker chain...
  2. 3. opposite outside
  3. 5. in french it's "coupable"
  4. 7. it's a finger print
  5. 10. in among us it's the usurper
  6. 11. synonym of killer
  7. 12. synonym of clue
Down
  1. 2. it's the synonym of the word search so above
  2. 4. person who saw the crime
  3. 6. synonym of motive
  4. 8. corpse synonym of dead body
  5. 9. synonym of thief