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.
Norma's healing powers draw more believers; Piper creates a new business venture; Caputo breaks in the new hires.
Cooper and the red cell team try to find a killer who disfigures the faces of his victims.
