Today’s Saturday Stumper

Frank Longo has made another terrific Newsday Saturday Stumper. I started with nothing. Boundless and bare, the lone and level sands stretched far away, until I spied 45-Across, five letters, “‘Quack Shot’ antagonist,” and 58-Across, ten letters, “Persepolis Football Club’s home.” Then I looked back and saw 2-Down, five letters, “Playwright from Paris,” and 7-Down, three letters, “     shot.” The first letters of those answers gave me 1-Across, ten letters, “’85 film about a novice nun.” The rest of the puzzle left me feeling that I’d never get it. But words here and there, and everything fell into place.

Clues I especially admire: 40-Across, three letters, “What mice often hold.” 62-Across, ten letters, “Musical band.” 3-Down, five letters, “Potential spoilers.” 26-Down, seven letters, “Saying ‘I dunno,’ say.”

No spoilers: the answers are in the comments.

[With apologies to Percy Bysshe Shelley.]