After a senator’s daughter is kidnapped and held for ransom, the FBI is called in to assist with finding the child before their time limit expires. However, in order to do so, they must dig into the senator’s past for clues to who did this to his family.

Maggie and OA hunt down a ruthless group of robbers who are posing as police officers to target armored trucks.

Maggie and OA are on a mission to find a couple who are behind a spree of violent armed robberies that resulted in the death of an off-duty police officer.

Maggie and Dana struggle to find justice for victims murdered by a serial killer who left a ghoulish mark on all of his victims, while the mayor limits the investigation in order to prevent economical loss.

After a decorated FBI agent is murdered, the team investigates and uncovers the man led a double life. Also, Maggie struggles with what information she should reveal to the agent’s widow, who is also her personal friend.

After a shooting at a nightclub, it appears that the FBI may have ignored previous threats from a local white supremacist group. Also, Kristen wrestles with her commitment to the Bureau and her responsibility to her community.

The team races to stop an active serial killer after three women are found weighted down at the bottom of a lake, and Jubal looks into an old closed case after there are multiple similarities to the recent victims.

A shooting at a quinceañera leaves two dead, but the team believes they may not have been the intended targets. Also, Maggie is trapped between a rock and a hard place as the team decides the best plan of action for using a witness to take down the suspect.

Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals. Jubal's son waits for important surgery at one of the impacted hospitals.

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

After an employee of the U.S. Army is shot in an industrial park, the team works to track down the killer who reveals a larger plot at play. Meanwhile, Tiffany continues to struggle with the guilt surrounding Hobbs' death.

After three customs officers are shot dead in a cargo heist, the team entrusts OA's old army buddy Clay to help determine if it was an inside job.

After two jurors for a high-profile mafia trial are gunned down, the team jumps into an organized crime investigation until it is discovered that the jurors may not have been the intended targets at all. The case becomes personal for Scola when he learns that one of his former drill instructors from the military academy he attended may be linked.