Between The Visit and the first season of Wayward Pines, 2015 restored our faith in M. Night Shyamalan as a filmmaker capable of delivering clever, surprising thrillers, which makes us all the more optimistic for Split. The director’s latest project stars James McAvoy as a man with many personalities (one of which is quite deadly), and although the first trailer suggests that Split borrows familiar elements from other notable films, we have to believe that Shyamalan still has a few tricks up his sleeve.

McAvoy stars in the new film as Kevin, a man who seems to be doing mostly OK in coping with his dissociative identity disorder, which has created 23 personalities in his psyche. But there’s one personality that he’s been keeping secret — and it’s a little on the violent side, to say the least. There do appear to be some similarities between Shyamalan’s latest and other horror films, like Psycho and Identity, but given his predilection for twists, Split is probably a bit more than it seems.

Co-starring Anya Taylor-Joy (The Witch) and Betty Buckley, Split is officially described as follows:

Writer/director/producer M. Night Shyamalan returns to the captivating grip of The Sixth Sense, Unbreakable and Signs with Split, an original thriller that delves into the mysterious recesses of one man’s fractured, gifted mind. Following last year’s breakout hit The Visit, Shyamalan reunites with producer Jason Blum (The Purge and Insidious series, The Gift) for the film.

While the mental divisions of those with dissociative identity disorder have long fascinated and eluded science, it is believed that some can also manifest unique physical attributes for each personality, a cognitive and physiological prism within a single being.

Though Kevin (James McAvoy) has evidenced 23 personalities to his trusted psychiatrist, Dr. Fletcher (Betty Buckley), there remains one still submerged who is set to materialize and dominate all the others. Compelled to abduct three teenage girls led by the willful, observant Casey (Anya Taylor-Joy, The Witch), Kevin reaches a war for survival among all of those contained within him—as well as everyone around him—as the walls between his compartments shatter apart.

Split hits theaters on January 20, 2017.