With last year's release of "Gone Girl," and all the ensuing awards-season hype, it was easy to forget that another one of Gillian Flynn's books is due for a big-screen release: the creepy, gritty "Dark Places," starring Charlize Theron.

"Dark Places" has been sitting in a can in Hollywood for ever, but now it finally has a trailer, and a release date of April 8 -- although, alas, only in France. The U.S. release is supposed to happen later this year. Still, this movie belongs on your radar, right now.

Watch the trailer below, and read on for all the reasons to be stoked that "Dark Places" is finally seeing the light of day.

No, really: Did you watch that trailer?

For those who don't read French, here's the story: Libby Day is the sole survivor of the massacre of her mother and sisters by her brother, Ben. 25 years ago it was a ghastly tragedy; now it's a source of sensational speculation for true-crime obsessives who believe that the facts of the case don't add up. And because it's a Gillian Flynn story, you can expect a lot of twists and turns on the way to its shocking conclusion.

Check out that all-star cast.

Charlize Theron stars as Libby Day, but we've also got Nicholas Hoult, Christina Hendricks, Drea de Matteo, Corey Stoll, and Chloë Grace Moretz, smoking cigarettes and making trouble.

Another great anti-heroine.

Flynn specializes in writing complicated, messed-up, fantastically dislikeable women, and "Dark Places" is no exception. If you liked Amazing Amy in "Gone Girl," you'll love the busted, cynical, feral Libby.

Plus, Nicholas Hoult doing the creepy-sexy thing.

For those who know him best as Beast from the new "X-Men" movies, seeing Nicholas Hoult flex his acting muscles as a guy with an unhealthy obsession with sordid crimes is a nice change of pace.