Mystery in the country side

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Across
  1. 6. conduct an inquiry
  2. 8. a thick cloud of tiny water droplets suspended in the atmosphere
  3. 9. the middle of the night
  4. 10. a male member of a police force
  5. 11. Out of this world
  6. 12. something that is difficult or impossible to understand or explain
Down
  1. 1. A mansion or country residence
  2. 2. can be found in the closet
  3. 3. vampire
  4. 4. An aspect or aspects of life characterized as being shadowy, sinister, evil, criminal, etc.
  5. 5. Character or function of detecting
  6. 7. frequented by a ghost
  7. 9. a large, ugly, and frightening imaginary creature