The Scribbler (film)

The Scribbler is a 2014 American thriller film directed by John Suits and written by Daniel Schaffer, based on his own graphic novel of same name. The film stars Katie Cassidy, Garret Dillahunt, Eliza Dushku, Kunal Nayyar, Michelle Trachtenberg and Sasha Grey.

At Juniper Tower, Suki reconnects with her friend with benefits Hogan, a man who fakes depression so that he can stay there as the rooster of the henhouse. She also meets several female tenants and learns that Hogan has slept with most of them. One by one, the girls are found dead from apparent suicide.Suki soon realizes that the girls have actually been murdered, and is worried that one of her multiple personalities is responsible. She keeps using the Siamese Burn to delete them, but the machine has been heavily modified, which leads Suki to believe that one of her personas, the one that committed the crimes, is trying to keep Suki from getting rid of her. She suspects the mysterious Scribbler, a superpowered being who communicates with her by scribbling messages backwards. ........

Source: Wikipedia