Who are you really? Split examines life for one man with 23 personalities

SNAPSHOT
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. (official synopsis via Den of Geek)

Major loss can do terrible things to a person.

Particularly when there has been little to no support and they are left to deal with all kinds of trauma all by themselves.

The result can sometimes be someone like Kevin (James McAvoy) , who we are told is manifesting 23 personalities in the one body, personalities so powerful that they can even affect his physical appearance.

While there are legitimate concerns from some groups that a storyline of this nature, which forms the basis of the latest joint endeavour from M. Night Shymalan and Blumhouse Productions who gave us the unnerving, compelling The Visit, serves only to stigmatise the mentally ill, we can only hope the narrative is more nuanced than this trailer would suggest.

Concerns aside, it does present as a gripping drama, as Kevin is forced to grappled with the dissolution of the walls between his various characters with no real assurance that he or the victims at the mercy of his his nastier personalities will get the happier ending they deserve.

Split opens on 20 January 2017 in USA and 2 February 2017 in Australia.