Elements of Surprise

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Across
  1. 4. used as a fatal poison in Agatha Christie's 'Murder is Easy,' 'Evil Under the Sun,' and 'Dumb Witness' (sorry!)
  2. 11. pepper's partner
  3. 12. a noble who likes to party like it's the 80's
  4. 13. part of the name of the band everyone loves to hate
  5. 14. part of Joel and Claire's street address
  6. 16. achieved by Bob Dylan, Beyonce, and the Beatles
  7. 17. keeps food fresh (UK)
  8. 19. Superman's least favorite element
  9. 20. aka. Quicksilver
  10. 22. a favorite of chipmunks and balloons
  11. 23. ooh it's organic
  12. 24. 1200 BC was my heyday
  13. 25. this element used to date Justinium
  14. 26. great for explosives and for cold-brew
  15. 28. a Nirvana song
  16. 29. a big movie theatre franchise (ex: at the Rim in San Antonio)
Down
  1. 1. useful if you have hyperthyroidism ... or live near Chernobyl
  2. 2. most abundant metallic element in the human body
  3. 3. fatal poison in the
  4. 5. Dr. in Rick & Morty
  5. 6. shade of blue
  6. 7. named after Greco-Roman god of the underworld
  7. 8. the fatal poison in Agatha Christie's "ABC Murders" (sorry)
  8. 9. why, you're glowing
  9. 10. forms half of the brass alloy
  10. 11. rotten eggs?
  11. 15. 25th wedding anniversary
  12. 17. keeps food fresh (US)
  13. 18. 1 is not the loneliest number
  14. 21. helps Graham M-F
  15. 27. "Shoot me down, but I won't fall"