One of us is Lying

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Across
  1. 2. Medical Item used to stop an allergic reaction
  2. 3. Happening without provocation or cause
  3. 5. The criminal of the four main characters
  4. 6. untidy in appearance
  5. 10. School which the characters go to
  6. 12. Author of One of us is Lying
  7. 15. Someone who has killed someone else
  8. 16. Gossip app that Simon created
  9. 17. Person who supervise individuals released from prison
  10. 20. State which the characters live
Down
  1. 1. Thought out or planned beforehand
  2. 4. Room where students enter after school for punichment
  3. 7. Room where Simon has an allergic reaction
  4. 8. Character who was the real murderer
  5. 9. Food that caused an allergic reaction
  6. 11. Character who was killed
  7. 13. The genre of the book
  8. 14. Sport that Cooper plays
  9. 18. The brain of the group who's Yale bound
  10. 19. person,group,or entity unfairly blamed for the faults,mistakes,or misdeeds of others