Thistledown puzzler

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Across
  1. 2. Dodgy actor joins earl for a bite!
  2. 4. Career golfers
  3. 5. Although a conifer, it loses its needles each autumn
  4. 6. The invisible assailant that has robbed us of our liberties!
  5. 7. Ancient writing material
  6. 10. Actress, Tilda, lives in Nairn
  7. 11. Bivalve found in the river A'an
  8. 12. Historical ladies' collar
  9. 14. Local bird, sometimes known as the water ousel
  10. 15. Something for the choir to thing?
  11. 17. Was this Badenoch earl a wild dog?
  12. 19. Castle by a distillery
  13. 20. Call to mind
Down
  1. 1. Historic north-eastern Scottish county
  2. 3. Conversation starter
  3. 4. The type of bridge at Bridgend of Glenlivet
  4. 8. Oatmeal, fried with fat, onions and seasoned
  5. 9. Night bird sounded mating call?
  6. 13. Glacial gorge near Tomintoul
  7. 16. Family-owned 15th century castle
  8. 18. Male attire, woolen in a tartan pattern