The film centers around three teen girls who are abducted in a parking lot by Dennis, one of the 23 split personalities that live inside of Kevin’s brain. Well it mostly revolves around one girl and a select few of Kevin's personalities, the one girl in question is social outcast Casey (played by Morgan and The VVitch star Anya Taylor-Joy) who is only really there out of bad luck when her ride doesn't show after a party. The main personalities we meet are really Dennis, the more psychotic of the minds, Patricia who is the calm yet calculated one and Hedwig, Kevin's 9 year old personality who starts to grow a bond with Casey throughout the film. However what the film is really leading to is The Beast, a 24th personality which none of the 23 have ever met, but who is waiting to arise from the darkness deep inside on Kevin's mind.
I LOVED Split, it was ball achingly tense throughout and so masterfully acted by McAvoy, who takes on all of the personalities with vigor and passion. He is ALL of them, he has gone at this film with everything and you can tell. This is a role I have not seen McAvoy do before and it is glorious. He does menacing so very well as well, making you urge the girls to escape through the screen.
This is M. Night Shyamalan's return to form. It is very dark at points but for the right reasons. The story telling in the scenes between Kevin's Barry personality and his psychiatrist Dr. Karen Fletcher (Played by the amazing Betty Buckley) really got the character of Kevin over.
This is a must watch, especially with the trademark Shyamalan twist which I never saw coming.