The Curious Incident of the Gog in the Night-Time Crossword

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Across
  1. 3. This happens for Christopher when he sees 5 red cars (3 words).
  2. 4. Christopher's pocket knife has one.
  3. 5. What habit does Christopher use to calm himself when overwhelmed?
  4. 7. Christopher's friendly elderly neighbour (2 words).
  5. 8. Christopher's hometown.
  6. 12. One of Christopher's favourite subjects.
  7. 15. What major exam is Christopher preparing for during the novel? (2 words)
  8. 19. The novel's narrator (2 words).
  9. 20. Christopher was shocked to find these in his father's bedroom.
  10. 21. The murdered dog's owner.
Down
  1. 1. Murder weapon in the novel (2 words).
  2. 2. The Hound of the _________: Christopher's favourite novel.
  3. 6. A famous mathematical problem in the novel (4 words).
  4. 9. Christopher stole this from his father before he escaped.
  5. 10. The breed of the murdered dog.
  6. 11. Christopher's personal hero (2 words).
  7. 13. The school's psychologist.
  8. 14. Christopher's father's job.
  9. 16. Christopher's pet's name.
  10. 17. Christopher's special teacher and mentor.
  11. 18. The murdered dog's name.