After a police officer is murdered, Patterson unlocks a disturbing tattoo that appears to have predicted his killing, and the team chases a violent clue trail to stop further attacks. Mayfair reveals secrets from her past to Weller, seriously testing their relationship.

In the thrilling mid-season finale the team goes after a group of sleeper spies that have just been activated and race to stop a slew of assassinations.

After a tip reveals there's a mole within the FBI's New York Office, the team must hunt for the operative while facing extreme scrutiny from Inspector Fischer. The team's deepest secrets threaten to be exposed, and everyone is a potential suspect - but some, especially Jane Doe have more to hide.

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.