The filmmaker, who will completely own the $90 million horror film in 25 years, says he's unsure why his deal has gained so much attention.

Yes, it's another killer Michael B. Jordan film. But the story behind the scenes, starring Ryan Coogler, is the one that you'll want to study closely.

Ryan Coogler's new movie "Sinners" has garnered at least $71 million in box office revenue since its April 18 theatrical release — but it's the deal he inked with Warner Bros. to make the movie that's significant for a film director who was deep in debt roughly a decade ago.