While Jane and Weller hunt down a collective of dangerous computer hackers, Patterson and Rich Dot Com must work together to hide an explosive secret from their past.
Facing a threat within the FBI, the team is forced to run a covert operation out of Jane and Weller's apartment. A tattoo leads to a doctor with a deadly secret.
A surprising visit from Nas leads the team to investigate a dangerous piece of technology that was stolen from the NSA. Roman and Blake grow closer as they attend a high-stakes poker game.
When Patterson's investigation into a tattoo results in a horrible incident, she tries to figure out what went wrong - but quickly realizes all is not as it seems.
The team must decide whether to trust a prisoner who warns them of a dangerous plot. Zapata is caught between the FBI and the CIA. Roman and Crawford butt heads over how to handle a volatile situation.
A CIA source threatens to tear the team apart. Rich's place in the FBI is called into question. Roman and Crawford spend a day together under strange circumstances.
Jane and her team must fight for their lives when Roman sends deadly assassins after them. Meanwhile, Patterson goes on a date, Reade contends with the O.P.R. inquisitor, Jane and Weller go to dinner, and Zapata attends a funeral.
The team must partner with an oddball conspiracy theorist to keep Crawford from acquiring a deadly weapon; Roman struggles to maintain his personal life with Blake while completing a series of secret missions.
After receiving shocking news about Avery's father, Jane and Weller must hunt down an elusive criminal. Meanwhile, Patterson's father helps the team in the lab.