Everyone knows by now that Leonardo DiCaprio has succeeded Robert DeNiro to become Martin Scorsese’s Modern Muse, but what we don’t know is how long their fruitful collaboration will last. DiCaprio has starred in five of Scorsese’s last six films, including the flick that finally got Scorsese an Oscar, The Departed. Now, the pair have found their sixth collaboration, and it’s a big one.

Deadline reports that Paramount Pictures has landed the rights to Erik Larson’s bestselling nonfiction book The Devil in the White City, and that DiCaprio and Scorsese are attached to star in and direct the adaptation, respectively. The book tells two intertwining stories tied to the 1893 World’s Fair in Chicago: That of architect Daniel Burnham, who made the fair a success, and that of H.H. Holmes, a serial killer who murdered dozens of people, often in very elaborate ways, in his Chicago “Murder Castle.”

DiCaprio has wanted to play the Holmes role for quite some time, and now it seems he’s getting his chance with Scorsese by his side. I can’t wait to see DiCaprio evolve from leading antihero in The Wolf of Wall Street to full-on villain, and I think I’ve been waiting all my life to see what Martin Scorsese’s Murder Castle would look like. If this gets made, it’ll be one of the most interesting films in whatever year it’s released.