The team looks into a string of Russian spy encounters after a murder victim is found in the classified section of the National Archive.

The team rushes to stop an upcoming terror attack against the U.S. while Agent Torres languishes in jail.

Gibbs attempts to determine the meaning behind a cryptic warning from Ziva, which also makes him wonder why she has decided to return.

Gibbs and Ziva's lives are put in danger when their rogue investigation goes awry due to the discovery of a potential terrorist plot.

The team investigates various locations a big rig visited before it was used to crush a Marine; Sloane wants the team to discuss Ziva's recent disappearance.

A series of attacks against homeless veterans is connected to a crime scene at the Arlington National Cemetery; three are punished for withholding information.

The team investigates a Marine corporal for her neighbor's murder; Gibbs becomes friends with his new neighbors after their child's baseball breaks his window.

The evidence found in the case of a petty officer who was found murdered during a party suggests that one of Kasie's oldest friends is the primary suspect.

The team stumbles upon a series of hidden cameras that live-stream the insides of people's motel rooms in Virginia while they investigate a Marine's murder.

The BAU searches for the person responsible for a string of fatal car crashes; Spencer deals with the overwhelming evidence planted against him.

The BAU team is brought in to investigate a string of attacks against both young men and young women who are left grotesquely disfigured by acid.

As the BAU investigates an unsub known as "The Bone Crusher," a mother comes forward saying that she can offer the team information pertinent to the case.

Two bodies are found to have been murdered by varying means, so the BAU thinks two unsubs may be working at the same time; team tries to ensure Reid's safety.

An urban vampire takes his victims at night and leaves them in the sewers underground; Reid makes a decision that greatly affects him and other inmates.

The Behavioral Analysis Unit is dispatched to Arizona, where an unknown subject is believed to be responsible for the deaths of three individuals.

Multiple federal government employees fall victim to a series of peculiar heart attacks; Reid nervously waits to learn about his trial date.

When Reid becomes increasingly worried that his mother has been taken, he enlists the help of the BAU to look into the matter while he's trapped in prison.

A Navy culinary specialist is targeted while visiting her family's restaurant; Brody heads to Washington D.C. to follow up on a lead involving the leak case.