The theft of a bioweapon from an unwitting defector forces the team to work with an old foe to secure the lethal pathogen and prevent an outbreak in N.Y.C.

When a big city donor is murdered inside her apartment, the team tracks down the young killer who leads them into a crypto scam he's been running with one of his victims, looking to seek revenge on his family.

When an FBI evidence locker is robbed, leaving behind a dead ERT agent, the team discovers a vigilante duo looking to take down a high-scale pedophile ring. Meanwhile, Isobel meets the new Assistant Director in Charge.

When a single mother and her son are abducted while visiting a state park, Maggie brings in Peter Olsen to help profile their suspect. But as the team works, they make a harrowing discovery about an old case.

When the body of a VA psychiatrist is found tortured and deceased under a nearby overpass, the team is led to a suspicious religious leader with a substantial online presence. Meanwhile, OA builds a connection with Special Agent Zara Ushruf, who assists on the case.

A double homicide in Brooklyn sets the team after a corrupt longshoreman but they soon discover something sinister has been smuggled into NY. As they race to stop the threat, Isobel enlists the help of CIA's Deputy Chief of Station Nikki Reynard.

A dangerous drug kingpin from Eva's past resurfaces when two children and a daycare worker are killed due to an accidental drug exposure. While the team works the case, Eva wavers between her mission as an agent and her personal vendetta.

After Maggie's sister, Erin, goes missing, the team begins an all-out search to recover her. But when Maggie discovers Erin was kidnapped by a sinister figure from her past, she must race to save her before it's too late.

After the son of a professional basketball team owner is taken for ransom, Jubal and the team race to catch the kidnappers. Soon, they discover the perpetrators have been planning a larger revenge plot that they must act quickly to stop.

When a federal whistleblower is murdered while in FBI custody along with two agents, the team is stunned to find a familiar perpetrator has resurfaced. Meanwhile, OA wrestles with telling the team what is happening in his personal life.

When an undercover operation being led by Special Agent Nina Chase goes sideways, the team works together to flip their only witness to help them hunt down a rip crew at a cartel wedding. The aftermath leads Nina and Scola to realize they are ready to tie the knot.

Chaos erupts in the city when an attack disrupts cell, internet and emergency services. As the team races to uncover the culprits, they learn the group responsible is a radical accelerationist movement fixated on resetting society.

As the holidays approach, the team finds three slain sex workers inside a brownstone - they uncover the murderer has a larger plan in place that they must rush to stop. Meanwhile, Jubal receives a concerning call from his son Tyler.

When a journalist is shot while interviewing a prime minister, all fingers point to an assassination attempt, but the team uncovers a deeper conspiracy after the assassin is also targeted. Meanwhile, OA struggles to let Gemma in on the dangers of his job.

When a large-scale explosion rocks a Brooklyn apartment complex, the team quickly locates the perpetrator and discovers he's acting on the orders of a convicted felon currently serving time. Meanwhile, Isobel must name her successor before she moves into her new role.

When a robbery at a community clinic turns deadly, the team investigates a drug trafficking crew and soon uncovers that the clinic's doctor may be more involved than they initially thought. Meanwhile, Isobel and her stepdaughter are at odds over a family issue.

Maggie partners with Eva to hunt a killer after a shocking daytime stabbing in an NYC park. After a subsequent murder, they realize the assassin has a hit list, begging the question: "Who's on it and who's next?,"

Following a failed assassination attempt on a U.S. senator, OA and Maggie are tasked with escorting her back to Washington, D.C. on a flight that becomes more perilous than imagined.

After a young man is found beaten to death on federal land, Scola and Special Agent Eva Ramos hit a roadblock when their case intersects with a DEA operation. Meanwhile, there is a potential shake-up inside of the JOC.

When paintings from a high-profile international cultural exchange are stolen - leaving a security guard dead - the team races to recover the priceless artworks. Meanwhile, Maggie turns to a friend for help profiling suspects.

After a federal judge disappears, a routine investigation takes a dark turn as the team uncovers that the judge had been searching for his missing son on a secluded island on the city's edge, where authority has crumbled. Meanwhile, reality weighs heavy on Jubal as he takes on a new leadership role.