McCall visits "The Grave Digger," a serial killer she put behind bars a year ago, to uncover who is behind a series of copycat murders. Meanwhile, Dee skips her Peer Ear meeting to go to a party with Cam.

McCall is contacted by Samantha Reed, whose father, ex-CIA agent Elijah Reed, is missing. While Samantha joins forces with the Equalizer team to track down the agency legend, she learns more about her family's past in the Dominican Republic.