13 Blumhouse Horror Movies That Will Have You Sleeping With the Lights On

The second installment in the Unbreakable trilogy (which you can watch without having seen the first) stars James McAvoy as a sufferer of dissociative identity disorder who has 23 distinct personalities, some of which are violent. When three teens are abducted by "Dennis," they are then introduced to the 24th and most terrifying personality: "The Beast."

Watch Split on Amazon Prime.