Mystery

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Across
  1. 3. crouch
  2. 6. suspect
  3. 9. uninhabited
  4. 11. awkward
  5. 12. annoyed
Down
  1. 1. uneasy
  2. 2. scramble
  3. 4. apprehensive
  4. 5. haunted
  5. 7. clue
  6. 8. riddle
  7. 10. dread