A new lead in the ongoing mole investigation is uncovered after two men disguised as sheriff's deputies are killed in front of Callen's home by an unknown female assailant. Meanwhile, Nell visits a prison to interview an inmate who is withholding information on the department's leak.moreless
After a Homeland Security agent is poisoned by a notorious Triad assassin, NCIS uncovers a warehouse of counterfeit purses and a money trail to stolen government funds. Meanwhile, Nell joins the team in the field.moreless
The team investigates an abduction case while down two members, with Hetty being held in Washington, D.C., for questioning in the mole probe, and another still in ICU following the mission in Syria.moreless
The team runs into problems while attempting to clear Kensi Blye from charges of murder after she has a deadly confrontation with CIA agents.
Nate and Serena explore their friendship. Blair thinks Chuck is having problems forgetting the woman he saw at his father's grave. Jenny go with Damien to a State Dinner but she wasn't aware that it was also to help him with a drug exchange. Vanessa and Dan try to move past Dan's confession. Rufus returns from a ski trip and tries to avoid Lily.moreless
As Vic prepares to help Lem get out of the country to begin a new life in Mexico; Kavanaugh and Aceveda attempt to capitalize on the situation by using this as means to try to take down the leader of the Strike Team. Dutch decides to file for a transfer. Meanwhile, Shane tries to cut off the investigation by taking extreme measures and Danny finally confronts the father of her child.moreless
Paracelsus, a former friend of Father's who has been exiled, has been selling a deadly hallucinatory drug in the world above. Meanwhile, Catherine has volunteered to go undercover on this ongoing drug investigation and turns to Vincent for help. Father and Vincent soon must decide how to handle Paracelsus.moreless