The Prestige is a 2006 mystery drama film directed by Christopher Nolan, from a screenplay adapted by Nolan and his brother Jonathan from Christopher Priest's 1995 World Fantasy Award-winning novel of the same name. The story follows Robert Angier and Alfred Borden, rival stage magicians in London at the end of the 19th century. Obsessed with creating the best stage illusion, they engage in competitive one-upmanship with tragic results. Wikipedia
Cutter: I saw you, drop the knot again...? Julia McCullough: I think I turned my wrist... Cutter: Some nights you just don't get it, do you? I mean, if that knot slips and Julia's on the hoist, she'll break her leg! Alfred Borden: It's a wrong knot. (pause, Cutter stares at him) Alfred Borden: Like I said, the Langfeld Double will hold tighter! Cutter: The Langfeld Double isn't a wet knot! It's too dangerous - if the rope swells up, she won't be able to slip it! Julia McCullough: I can slip a Langfeld underwater. Alfred Borden: (looks at Julia) She can slip it, we can practice... Robert Angier: Hey, Borden, he said no! Alfred Borden: (scoffs) Oh well, you know knots better than me, do you? Cutter: Listen! No more mistakes!