When does Person of Interest return?

Person of Interest is an American science fiction crime drama television series. It aired on CBS from September 22, 2011, to June 21, 2016, with its five seasons consisting of 103 episodes. The series centers on a mysterious reclusive billionaire computer programmer, Harold Finch, who has developed a computer program for the federal government known as the Machine. Finch and Reese attempt to understand the threat to, or by, people the Machine identifies as being "of interest" by providing only their social security numbers.