Jill's Birthday Cryptic Crossword

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Across
  1. 4. Arlo's dadd(y) and Jamaican pickled herring! Really a good place to work? (4,5)
  2. 5. Flack She killed Jill (and sibs) softly en route to Vail by car. (7,5)
  3. 6. Jill's Gemini. (3,5)
  4. 9. Did a coder con really ground this? Or was it just Jills' retirement?(8)
  5. 11. Messy littered field makes him her favorite guy (for now). (6,7)
  6. 12. Idle Abelson said "I ain't blocking no sun". Jill said, "Slap it on. No SPF!" (3,2,6)
  7. 14. The Golden spiel kept Jill's high school friends in clover. (It's all legal now.) (7,4)
  8. 15. Does Jill dare lose the Marshall Cup here? (8)
  9. 17. Angels suss out Jill's disguise. (10)
  10. 18. Confused Asians led Jill to this Republican oasis. (3,6)
  11. 19. It irks Molly that Jill claims to have learned anything here. (4,5)
Down
  1. 1. Dom Hotness shattered Jill's favorite teen band. (3,7)
  2. 2. They (and Romans!) were yuletide co-conspirators. (3,3,3)
  3. 3. How the Denhams travelled to Vail. (Like Beth & Ian in South America.) (2,3,4)
  4. 7. ROTC anthem led to some boozy nights. (10)
  5. 8. Living in a King's Playground was just an egret prank. (6,4)
  6. 10. The Empire's flatulance gave Jill an early hit. (7,3)
  7. 13. ABC add nullo equals a great place to sit by the pool, eat banquet burgers and drink milkshakes. (7,4)
  8. 16. Silvia inking Jill's favorite winter pastime. (6,2,4)