Palindromes

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Across
  1. 2. Convent resident
  2. 5. Quick, secret look
  3. 6. Collection of long heroic tales
  4. 8. Core belief or 2020 Nolan film
  5. 9. Even or flat
  6. 10. Aircraft-detecting system
  7. 12. Polite form of address
Down
  1. 1. Father, informally
  2. 2. Twelve in the daytime
  3. 3. One who brings back
  4. 4. Something that turns
  5. 6. Batting average, home runs, WAR
  6. 7. Performances for one
  7. 11. Property document
  8. 13. Mother, informally