The search for a retired CIA agent's killer heats up, literally, when the prime suspect is killed in an explosion. The bombing is quickly linked to a suspected terrorist the agent was following, but Lilly suspects there's more to the case than meets the eye. While forensics tech Louie finds himself forced to defuse a tense situation, the squad must find the man the victim was following and learn what he knows before the case witnesses are taken out one by one.
Meanwhile, for the first time in her life, Lilly must choose between her work and her family, until Agent Cavanaugh proposes a solution.
The music of REM plays througout.
Lee Tergesen ("Oz") guest stars as the victim. Gail O'Grady ("NYPD Blue", "American Dreams") guest stars as his wife. Monica Keena ("Dawson's Creek") and Clancy Brown ("Lost", "Highlander") guest star as his co-workers. Bruce Davidson ("X-Men") and Shaun Toub ("Iron Man") guest star as his boss and neighbor. Part 2 of 2.