ULYSSES has inspired me!
Here’s the opening:
Plump, panting Tuck Corrigan trotted up the tower stairs, bearing a Glock 9 mm in his sweaty palms. If he had spare breath, he would have cursed the Father. Why the hell did the jejune Jesuit insist on saying his morning office up here in the heavens?
Tuck found Father Stephen Father leaning against the parapet, his moody gaze on the distant sullen sea.
Father Stephen's cassock rustled as he straightened and turned. “Do you remember the day, Tuck, when I pulled you out of the gutter?”
Tuck took several deep breaths and shoved the Glock into the Father’s hand. “Listen, you frightful Jesuit, stop counting your spiritual notches. There are milkmen downstairs, and they aren’t delivering cream. Go and shoot them, would you?”
By the way, I've copyrighted this idea. Anybody steals it, I'll Holy Blood & Grail you in court.