and then there were none

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Across
  1. 3. toward the back.
  2. 7. troublesome
  3. 9. conduct
  4. 10. sodium
  5. 12. mass
  6. 14. force
  7. 15. dizzy
Down
  1. 1. under the skin
  2. 2. authority
  3. 4. Chemistry
  4. 5. hallway
  5. 6. thionyl
  6. 8. full of
  7. 11. crime
  8. 13. chilly