Scintillating Secrets

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Across
  1. 1. Who destroyed the answer to clue number 7.
  2. 2. At the end of which you might find a leprechaun's treasure
  3. 4. The number of young detectives in Enid Blyton's series "The Secret ___"
  4. 6. Where a wimpy kid might hide his thoughts
  5. 7. Voldemort's final horcrux
  6. 9. The secret district in The Hunger Games
Down
  1. 1. The wintry land beyond the wardrobe
  2. 3. The triangle where things mysteriously disappear
  3. 5. The mysterious fire obsessed organisation in an unfortunate series
  4. 8. The colour of Charlie's lucky ticket