The Impossible Crossword

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Across
  1. 1. Legendary viking hero
  2. 3. The weapon you found when you entered the room
  3. 5. Sherlock describes himself as a high-functioning..
  4. 8. Norse god
  5. 9. Third letter in Latin alphabet
  6. 11. Noxy and Nova were born on this day (2;8)
  7. 17. JB's lookalike (6;4)
  8. 18. This sits upon Holmes' mantlepiece
  9. 20. Someone who has suffered loss of memory
  10. 21. The _______, Irene Adler
Down
  1. 2. A strong espresso coffee made with less hot water than normal
  2. 4. Prince Philip's original last name
  3. 6. Smallest of the Channel Islands
  4. 7. More reliable than a garden strimmer
  5. 10. Marine fish of the genus hippocampus
  6. 12. The ________ incident of the Dog in the Nighttime
  7. 13. Cause of death of Steve Irwin
  8. 14. Type of penguin
  9. 15. Fleece, sugar and social media
  10. 16. John Watson's middle name
  11. 19. Thick noodle made from wheat flour