Crossword of the week: Batman day (20th)

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Across
  1. 3. Criminal mastermind who leaves cryptic clues (6).
  2. 6. Former Robin who struck out on his own (9).
  3. 9. Feline-themed burglar with a complex relationship with Batman (8).
  4. 10. Secret lair beneath Wayne Manor(7).
  5. 12. Clown-faced nemesis with a chaotic streak (5).
Down
  1. 1. Asylum housing Gotham’s most dangerous minds (6).
  2. 2. Villain with a monocle and an umbrella obsession (7).
  3. 4. Sidekick often clad in red, green and yellow (5).
  4. 5. Armoured costume worn by the Caped Crusader (7).
  5. 7. Fictional city plagued by crime and corruption (6).
  6. 8. Bruce’s surname, shared with his family’s fortune (5).
  7. 11. Loyal butler and confidant to the Dark Knight (6).