An Internet dating site becomes the source of terror for a young widow. Muncy struggles with Velasco's absence.
The NCIS team investigates the death of a Navy commander whose body suddenly explodes before Jimmy can examine it.
Alex enlists John's help in containing an outbreak. Donovan learns The Countess' true intentions. Liz and Iris plan to leave the hotel for good.
Cooper and the red cell team try to find a killer who disfigures the faces of his victims.
A major security breach and a large influx of new inmates forces Caputo to call in the big guns; things get too real for Crazy Eyes and Lolly.
