The seven wonders?

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Across
  1. 4. who is the main character
  2. 6. who had red hair
  3. 9. who is the author of this companion book
  4. 11. what number is this book in the series
  5. 13. the bronze giant
Down
  1. 1. the flying monster
  2. 2. what did they need to find
  3. 3. the author
  4. 5. the lost city
  5. 7. where did they find Cass
  6. 8. where was marco from
  7. 10. the strongest of them all
  8. 12. who had pink hair