The Crooked Mind (2016) online

Kyle Carson is diagnosed with multiple personality disorder, also known as DID. He despises his community after doing a background search on everyone who he believes has committed a crime without punishment. When one of his multiple personalities, Jonah, comes forth; he trains Kyle to kill and not be seen. Detective Amon Barracks leads the charge in stopping these murder sprees, but Kyle is always one step ahead. Kyle has to battle against detective Barracks and keep his own demons from taking over