A yellow pill

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Across
  1. 1. place where Lord Arthur went on holiday
  2. 4. the box is made of...
  3. 5. yellow aconitine pill
  4. 6. a very short letter
  5. 7. small expensive boat
  6. 8. Lord Arthur´s pet
  7. 9. the day where two people marry
Down
  1. 2. Lord Arthur has to kill her
  2. 3. something you eat or drink when you are ill
  3. 5. to do something at a later date