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Across
  1. 2. Metal hand replacement piece
  2. 8. Room for mad scientists
  3. 10. Noise made by loose chains
  4. 12. Unidentified flying saucer object
  5. 13. Green alien from Mars
  6. 17. Sound bouncing off walls
  7. 18. Low indistinct spooky sounds
  8. 19. Handcuffs for dungeon prisoners
  9. 21. Swashbuckler costume with eyepatch
  10. 23. Door closing hard suddenly
  11. 24. Black velvet eye covering
  12. 25. Mad science test creation
Down
  1. 1. High castle room for wizards
  2. 3. Noise of walking nearby
  3. 4. Creature from outer space
  4. 5. Sound of old floorboards
  5. 6. Living thing created by science
  6. 7. Metal links binding ghosts
  7. 9. Living thing changed by radiation
  8. 11. Speak unclearly in trance
  9. 14. Space explorer costume option
  10. 15. Sound from empty room
  11. 16. Underground castle prison room
  12. 20. UFO flown by martians
  13. 22. Speak magic words aloud