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.

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 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.

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

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?"

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.

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.