Title Airs On
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S4:E1 All That Glitters

FBI
09/21/2021 08:00 pm EDT

After a young woman is killed on her way home from a lavish yacht party, the team investigates who she was and how she came to ...read more After a young woman is killed on her way home from a lavish yacht party, the team investigates who she was and how she came to be at the event, which was attended by some of the most influential people in the world. Also, Maggie brings Crosby into the investigation after a murder suspect is identified as a veteran who had been on several Army operations with Crosby. show less

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S4:E2 Hacktivist

FBI
09/28/2021 08:00 pm EDT

Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals, while ...read more Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals, while demanding a full investigation into the recently deceased patients of a local psychiatric facility. With Jubal's son waiting for important surgery at one of the impacted hospitals, Jubal's adamant about remaining involved in the case despite Isobel's reservations. show less

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S4:E3 Trauma

FBI
10/05/2021 08:00 pm EDT

After the team finds a connection between bombings at government agencies and a private veterans' club in New York City, ...read more After the team finds a connection between bombings at government agencies and a private veterans' club in New York City, Isobel tells OA to recruit his former Army buddy, Chris, for intel since he spends time at the club. However, knowing the difficulty soldiers like Chris often face returning to civilian life, OA is reluctant to follow orders. show less

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S4:E4 Know Thyself

FBI
10/12/2021 08:00 pm EDT

The team hunts for a serial killer who is targeting young, homeless men. Also, Tiffany and Scola don't see eye to eye on how ...read more The team hunts for a serial killer who is targeting young, homeless men. Also, Tiffany and Scola don't see eye to eye on how to handle the case or the difference between partners and co-workers. show less

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S4:E5 Charlotte's Web

FBI
11/02/2021 09:00 pm EDT

After a suburban woman is kidnapped from her home, the team looks into trysts on both sides of a seemingly perfect marriage. ...read more After a suburban woman is kidnapped from her home, the team looks into trysts on both sides of a seemingly perfect marriage. Also, OA feels pressure from Mona to make changes in his career path. show less

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S4:E6 Allegiance

FBI
11/09/2021 08:00 pm EST

The team must track down a shooter targeting detectives from the same precinct and unit, while facing mounting tension from the ...read more The team must track down a shooter targeting detectives from the same precinct and unit, while facing mounting tension from the NYPD. Also, Tiffany finds that her NYPD roots may be influencing her view of the situation. show less

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S4:E7 Gone Baby Gone

FBI
11/16/2021 09:00 pm EST

After a young girl is kidnapped from her daycare, the team must help her parents navigate a debt owed to the deadly gang in ...read more After a young girl is kidnapped from her daycare, the team must help her parents navigate a debt owed to the deadly gang in their neighborhood. Also, Maggie struggles to focus on the case when her sister, Erin, returns from rehab. show less

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S4:E8 Fire and Rain

FBI
12/07/2021 08:00 pm EST

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S4:E9 Unfinished Business

FBI
12/14/2021 08:00 pm EST

After Rina is critically wounded while heading to work with Jubal, the team makes the chilling discovery that a vengeful Vargas ...read more After Rina is critically wounded while heading to work with Jubal, the team makes the chilling discovery that a vengeful Vargas orchestrated the shooting from behind bars and continues to target the rest of their team and their loved ones. show less

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S4:E10 Fostered

FBI
01/04/2022 08:00 pm EST

As the team investigates a string of jewelry store robberies that culminate in a double murder, they uncover a connection to a ...read more As the team investigates a string of jewelry store robberies that culminate in a double murder, they uncover a connection to a 16-year-old boy trying to survive the foster care system. Also, Tiffany becomes personally invested after learning about the boy's ill-fated upbringing. show less

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S4:E11 Grief

FBI
01/11/2022 08:00 pm EST

As the team searches for an abducted college co-ed, Jubal becomes intent on obtaining lifesaving leads from the father of the ...read more As the team searches for an abducted college co-ed, Jubal becomes intent on obtaining lifesaving leads from the father of the abductor's previous victim. Also, Jubal continues to grapple with the aftermath of Rina's condition, leading to a tense encounter with her mother. show less

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S4:E12 Under Pressure

FBI
02/01/2022 08:00 pm EST

Maggie goes undercover working in a bar to investigate an anti-government group that regularly gathers there and has several ...read more Maggie goes undercover working in a bar to investigate an anti-government group that regularly gathers there and has several members suspected in a series of bombings. The case opens old wounds for her when a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage. show less

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S4:E13 Pride and Prejudice

FBI
03/22/2022 08:00 pm EDT

When a Muslim college student and his younger brother are murdered, the team connects with the outraged imam of OA's former ...read more When a Muslim college student and his younger brother are murdered, the team connects with the outraged imam of OA's former mosque, who insists the victims were wrongly targeted as terrorists. Also, OA must reconsider where his loyalties lie when working the case with a Muslim anti-terrorist agent bent on solving the investigation through any means necessary. show less

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S4:E14 Ambition

FBI
03/08/2022 08:00 pm EST

The team rushes to investigate an extremist gun group after an anti-gun lobbyist building is bombed, with the promise of others ...read more The team rushes to investigate an extremist gun group after an anti-gun lobbyist building is bombed, with the promise of others to follow. Also, SAC Bashar dangles a possible promotion for OA, but only if he can persuade Tiffany to not report an incident she viewed as misconduct. show less

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S4:E15 Scar Tissue

FBI
03/22/2022 08:00 pm EDT

The team realizes they have a cross-country serial killer on their hands, after another body is found bound with the same ...read more The team realizes they have a cross-country serial killer on their hands, after another body is found bound with the same sophisticated knot as their local victim. Also, the case has ties to Isobel's father, Robert, and his hotel, leading to revelations about their fractured relationship. show less

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S4:E16 Protective Details

FBI
03/29/2022 08:00 pm EDT

After an ICE agent is fatally shot at an ICE vs. DEA hockey game, the team attempts to find the shooter who they believe may ...read more After an ICE agent is fatally shot at an ICE vs. DEA hockey game, the team attempts to find the shooter who they believe may also be targeting Congressman Curtis Grange, who was at the same game. show less

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S4:E17 One Night Stand

FBI
04/12/2022 08:00 pm EDT

When a young couple is found murdered in a New York City park after returning from a vacation, the team searches for a suspect ...read more When a young couple is found murdered in a New York City park after returning from a vacation, the team searches for a suspect linked to the drug trade; Scola turns over a new leaf when it comes to his relationships. show less

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S4:E18 Fear Nothing

FBI
04/19/2022 08:00 pm EDT

OA is forced to confront one of his biggest fears when the team discovers that deadly sarin gas may have been sold to ...read more OA is forced to confront one of his biggest fears when the team discovers that deadly sarin gas may have been sold to terrorists. show less

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S4:E19 Face Off

FBI
04/26/2022 08:00 pm EDT

When a morning show host is murdered inside her home, the team tracks the killer, who they realize is targeting powerful women. ...read more When a morning show host is murdered inside her home, the team tracks the killer, who they realize is targeting powerful women. Also, things become awkward for Scola when Special Agent Nina Chase becomes part of the team during Maggie's recovery. show less

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S4:E20 Ghost From the Past

FBI
05/10/2022 08:00 pm EDT

The murder of a TSA agent leads the team to hunt down a killer who is using drug mules to exploit airport security checkpoints. ...read more The murder of a TSA agent leads the team to hunt down a killer who is using drug mules to exploit airport security checkpoints. Also, OA struggles to cope with the aftermath of the sarin gas exposure and the 10th anniversary of his army friend's death in Afghanistan. show less

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S4:E21 Kayla

FBI
05/17/2022 08:00 pm EDT

When a retired DEA agent is shot outside a bakery, the team works to determine if the victim's past cases or current bouncer ...read more When a retired DEA agent is shot outside a bakery, the team works to determine if the victim's past cases or current bouncer job are connected to the murder. Also, Nina and Tiffany clash over the use of an informant while they are paired during the investigation. show less

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S4:E22 Prodigal Son

FBI
05/24/2022 08:00 pm EDT

As the team investigates a deadly robbery that garnered a cache of automatic weapons for the killers, they discover one of the ...read more As the team investigates a deadly robbery that garnered a cache of automatic weapons for the killers, they discover one of the perps is a classmate of Jubal's son, who is reluctant to cooperate. show less