CBS has not provided any reasons for canceling "Person of Interest." As of December 2015, CBS has yet to confirm that it is cancelling the show, but at the 2015 New York Comic-Con, actor Michael Emerson acknowledged that the fifth season is the last.
According to CBS, "Person of Interest" was, ratings-wise, the fastest-growing drama on broadcast television from the 2011-12 season to the 2012-13 season. Its ratings declined in 2014. As of December 2015, review aggregator website Rotten Tomatoes gives "Person of Interest" an 87 percent approval rating from critics across all four seasons and approval ratings of 100 percent for seasons three and four. At the New York Comic-Con, Emerson said he remains hopeful that another network considers picking up the series for a sixth season.