Snow and poison

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Across
  1. 1. harmful substance
  2. 4. where the story takes place
  3. 5. sleeping room
  4. 6. kids with no parents
  5. 9. party room
Down
  1. 1. castle
  2. 2. unknown person
  3. 3. wife or widow of a duke
  4. 7. instrument
  5. 8. substance grown in the upper jaw of a whale