Season 4

October 5, 2021

The team finds a connection between bombings and a private veterans' club in New York City; Isobel tells a reluctant OA to recruit a former Army buddy for intel.

October 12, 2021

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.

November 2, 2021

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.

November 9, 2021

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.

November 16, 2021

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; Maggie struggles to focus on the case when her sister returns from rehab.

December 7, 2021

The team attempts to extract key information from a vulnerable 9/11 widow, Hannah Thompson, who is shocked that her new “boyfriend” is the manipulative leader of a terrorist group planning an attack. Also, Scola is reminded of his brother’s death on 9/11, and Tiffany worries about his emotional choices during the investigation.

December 14, 2021

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.

January 4, 2022

As the team investigates a string of jewellery 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. Tiffany becomes personally invested after learning about the boy's ill-fated upbringing.

January 11, 2022

The team searches for an abducted college coed; Jubal has a tense encounter with Rina's mother.

February 1, 2022

Maggie goes under cover working in a bar to investigate an anti-government group that regularly gathers there; a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage.

February 22, 2022

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.

March 8, 2022

The team investigates an extremist gun group after an anti-gun lobbyist building is bombed; SAC Bashar dangles a possible promotion for OA.

March 22, 2022

The team realizes they have a cross-country serial killer on their hands; the case has ties to Isobel's father, Robert, and his hotel, leading to revelations about their fractured relationship.

March 29, 2022

After an immigration agent is fatally shot at a 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.

April 12, 2022

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

April 19, 2022

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

April 26, 2022

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.

May 10, 2022

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.

May 17, 2022

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.