Episode 12
The Tale of the Book of Secrets
Roman's clues lead to a billionaire hypochondriac with stem cells that could cure Jane, who is now on her deathbed. Patterson and Rich offer to trade the Book of Secrets for the stem cells -- but first they'll have to get it.
Season 4
With little recollection of her past, Jane secretly resumes her mission as Remi to infiltrate and dismantle the FBI.
All Episodes
Episode 1
Hella Duplicitous
October 12, 2018
The FBI team hunts a dangerous enemy operative, and a deadly new foe emerges.
Episode 2
My Art Project
October 19, 2018
The entire intelligence community is put in jeopardy when Remi co-opts an FBI case.
Episode 3
The Quantico Affair
October 26, 2018
Patterson and Rich DotCom take the reigns as the FBI team faces an explosive threat.
Episode 4
Sous-Vide
November 2, 2018
A decoded tattoo leads the team to a mysterious cache of dolls which turn out to be vehicles for biological weapons being sent around the world and now to the FBI. Jane exploits the fear of the weapons to advance her own plan to recover Shepherd.
Episode 5
Naughty Monkey Kicks At Tree
November 9, 2018
A blast from Rich DotCom's past sends the FBI team after a deadly terrorist plot.
Episode 6
Ca-Ca-Candidate For Cri-Cri-Crime
November 16, 2018
The team is drawn into dangerous political intrigue when a tattoo points to someone from Weitz's past.
Episode 7
Case: Sun, Moon, and the Truth
November 30, 2018
Remi's schemes put her and Weller in danger, while Patterson and Rich solve a mysterious puzzle at the FBI.
Episode 8
Screech, Thwack, Pow
December 7, 2018
Remi races against the ever-worsening ZIP poisoning to enact her ultimate plan.
Episode 9
Check Your Ed
January 11, 2019
The team's desperate gambit to get Jane back puts her head-to-head with Remi.
Episode 10
The Big Reveal
January 18, 2019
Reade confronts Zapata, while the team follows a lead to a potential cure for Jane.
Episode 11
Careless Whisper
February 1, 2019
The murder of a best-selling true crime novelist sends Jane and the team on a hunt for a serial killer detailed in the author's final manuscript, which also features lightly fictionalized versions of the FBI team.
Episode 12
The Tale of the Book of Secrets
February 8, 2019
Roman's clues lead to a billionaire hypochondriac with stem cells that could cure Jane, who is now on her deathbed. Patterson and Rich offer to trade the Book of Secrets for the stem cells -- but first they'll have to get it.
Episode 13
Though This Be Madness, Yet There Is Method In't
February 15, 2019
Jane and Weller's romantic getaway is cut short when the team must stop Madeline Burke's plans to blow up a building and crash a plane that turns out to be more than the average commercial airliner.
Episode 14
The Big Blast from the Past Episode
March 8, 2019
An active bomber forces the team to delve into a case from their past.
Episode 15
Frequently Recurring Struggle for Existence
March 15, 2019
Jane's past with Shepherd and Sandstorm both helps and hurts the team's efforts to stop the sale of a device that will weaponize stolen plutonium.
Episode 16
The One Where Jane Visits an Old Friend
March 22, 2019
Madeline escalates her plan, but the team isn't the only one chasing her down. Rich grows concerned for Boston’s well-being, and Jane seeks help from a familiar enemy.
Episode 17
The Night of the Dying Breath
April 5, 2019
The team races against the clock to save one of their own after Dominic enacts a nightmarish scheme in a bid for Madeline’s freedom. Tensions soar with Madeline as she makes her own demands.
Episode 18
'Ohana
April 12, 2019
Patterson's father, Bill Nye, returns for a case that pits the team against a pestiferous foe. Zapata goes rogue with an old friend. Jane and Weller continue their search for the hooded figure.
Episode 19
Everybody Hates Kathy
April 19, 2019
The team discovers an international conspiracy when a deadly weapon is stolen, Jane supports Weller when someone from his past dredges up painful memories, and Patterson and Rich contend with their newly released hacker accomplice.
Episode 20
Coder to Killer
May 24, 2019
A horrifying and vengeful villain threatens the FBI. Weller considers his priorities. Zapata and Reade try to navigate their living situation. Patterson explores a budding interest.
Episode 21
Masters of War 1:5 - 8
May 31, 2019
Dominic begins to enact Madeline's cataclysmic scheme as the team rushes to stop him. Tensions rise as past secrets begin to unravel.
Episode 22
The Gang Gets Gone
May 31, 2019
The team sets out on an international mission to stop an attack from spreading. Madeline attempts to turn the tables as internal conflict threatens relationships within the team.