Are they really ghosts?

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Across
  1. 2. just, only; helt enkelt
  2. 8. practical joke, trick; skämt, spratt
  3. 9. clear light, intense; klar
  4. 10. about; omkring
  5. 12. undergraduate (at university); studerande
  6. 13. happening, incident; händelse
  7. 15. top part of the body; huvud
  8. 16. by
  9. 19. gravely, with careful attention; allvarligt
  10. 23. amount: antal
  11. 24. theory, rumour guess; speculation
  12. 25. examine, explore; undersöka
  13. 26. persuade assure; övertyga
Down
  1. 1. scary ghostly; spöklik
  2. 2. gaze, watch intensely; stirra
  3. 3. event, incident; händelse
  4. 4. hang, hover, glide; här sväva
  5. 5. dark, blackness; mörker
  6. 6. phantom, spirit, spook; spöke
  7. 7. visited by ghosts; hemsökt av spöken
  8. 11. teaher university; föreläsare
  9. 14. walk wonder; gå fram och tillbaka
  10. 17. scary; skrämmande
  11. 18. part of university; universitetsdel
  12. 20. verify, say something is true; bekräfta
  13. 21. sound; ljud
  14. 22. people, citizens, community; allmänhet