Mid, sub, super

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Across
  1. 5. Big store
  2. 9. Middle of a 7 day period
  3. 10. Helps deliver babies
  4. 12. Middle of the middle part of a day
  5. 13. Not obvious
  6. 14. Someone who does something special
Down
  1. 1. Ghosts, zombies, vampires
  2. 2. Opposite of noon
  3. 3. Below zero
  4. 4. Really fast
  5. 5. Title underneath on tv
  6. 6. Special person who poses for pictures
  7. 7. Middle of the warmest season
  8. 8. Halfway through existence
  9. 11. Underwater vehicle