One dark window

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Across
  1. 2. captain of the destriers, king’s nephew
  2. 4. The shadowy entity in Elspeth’s head
  3. 5. dangerous fog infecting the kingdom
  4. 6. protagonist with a dark spirit inside her
  5. 8. royal elite guard force
Down
  1. 1. it is located at the end of the forearm, just before the hand begins
  2. 3. magical card set in the story
  3. 7. healer who helps elspeth