A tattoo points to an Air Force pilot with a difficult past; a disturbing memory haunts Jane; Weller believes he knows Jane's identity.

A member of a jewel heist crew is caught during a robbery & physical evidence shows he has unknown ties to Jane Doe. Someone from her past visits her but is unable to relay any useful information in time.

Jane and Weller go undercover as a top-notch assassin couple in order to protect some lethal info. Meanwhile, David tries to repair his relationship with Patterson; and Carter and Mayfair disagree about how to deal with a menacing person.

Sleeper spies get activated and prepare for assassinations so the team rushes to stop them.

Jane reels from a series of massive revelations about her tattoos and grapples with whether to trust Oscar; A tattoo leads the team to a shocking discovery at the Black Sea.

Weller's team investigate an ex-soldier who starts killing people, even though he's supposed to be dead. They find the same drug that was used to wipe out Jane's memory in his system. Jane looks for answers when seeing Oscar.

After a tip reveals a mole within the FBI, the team must hunt for the operative while facing extreme scrutiny from Inspector Fischer; The team's deepest secrets threatened to be exposed and everyone is a potential suspect.

An anonymous tip leads the team to investigate an urgent death row case, sending Zapata undercover; After nearly getting caught during the mole hunt, Jane considers leaving the FBI.

After a painting featuring one of Jane's tattoos is heisted from a gallery, the team discovers Jane is the real target. In order to protect her team, Jane goes AWOL.

After an armored truck is robbed, the team discovers that the stolen goods are chemical weapons and they must race to thwart a terrorist plot. Meanwhile, Jane grapples with a confusing memory of Weller - while growing even closer to Oscar.

After Patterson discovers a hidden message in the New York Times crossword, she embarks on a tattoo scavenger hunt that leads her into danger. Weller seeks his Dad's opinion about who kidnapped Taylor Shaw.

A shooting takes place on a college campus while the team is investigating one of Jane's tattoos. The team halts their investigation to hunt for the shooter. Meanwhile someone from Mayfair's past resurfaces.

The team protects a young girl with a tattoo connection and ties to a terrorist organization; Jane is conflicted; Borden and Patterson's friendship starts to bloom.

Criminal hackers infiltrate the FBI building, causing it to be locked down while the team is trapped inside; personal conflicts ignite as the team members struggle in close quarters.

The team races to identify an abandoned infant with the same tattoo as Jane.

Weller searches for the truth within a heartbreaking and confounding assertion. And while Jane reaches out to a former suspect for help with Oscar, the rest of the team struggle to help a friend.