"Bad Code," the second season premiere of Person of Interest aired on October 4, 2012, reveals the origin of the hacker Root (Amy Acker) as Samantha Groves and establishes her desire to "set free" the Machine, which she views as superior to human "bad code". The episode follows John Reese and Detective Carter's pursuit of a 1991 cold case in Texas to rescue Harold Finch from Root's captivity. For a detailed summary, visit the Person of Interest Wiki . "Person of Interest" Bad Code (TV Episode 2012) - IMDb
