Harry Potter & The Philosopher's Stone

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Across
  1. 6. Unlocks a door (9)
  2. 8. Thief, you have been warned, beware of finding more than treasure there (9)
  3. 9. Type of snake who escaped; _____ Constrictor (3)
  4. 11. Where dwell the brave at heart (10)
  5. 13. The Alchemist (6)
  6. 15. Holly and ____ feather, eleven inches, nice and supple (7)
  7. 16. Mr H Potter, The ________ under the stairs (8)
  8. 17. ______ in the Dungeons! (5)
  9. 18. Who was the Keeper of the Keys? (6)
Down
  1. 1. I show not your face, but your heart's _______ (6)
  2. 2. A Beginner’s Guide to ____________ by Emeric Switch (15)
  3. 3. Harry’s new broom [ch.10] (6)
  4. 4. Sherbet _______; A muggle sweet Dumbledore’s rather fond of (5)
  5. 5. Professor Dumbledore enjoys _______ music and tenpin bowling (7)
  6. 7. Silver ____ horns at twenty-one galleons each (7)
  7. 10. Norbert (9)
  8. 12. To Harry Potter! - The Boy who ______ (5)
  9. 14. Password? Caput ______ (8)