The CBS drama Person of Interest, starring Jim Caviezel, Michael Emerson, Kevin Chapman and Sarah Shahi, returns for a fifth and final season beginning Tuesday, May 3, at 10pm ET/PT. In the season premiere “B.S.O.D.” (the dreaded Blue Screen of Death), Reese (Caviezel) and Finch (Emerson) attempt to rescue the Machine’s source code before it deteriorates beyond repair. Also, Root (Amy Acker) fights for her life against Samaritan’s agents and Fusco (Kevin Chapman) faces hard questions after the deaths of Dominic and Elias. Following Tuesday’s season premiere, new weekly episodes air on Mondays and Tuesdays beginning May 9. The series finale airs June 21.