In the midseason finale, Annie, against Auggie's wishes, aids McQuaid with a difficult mission. Hayley becomes more resolute in her hunt for the truth.
Annie and Auggie delve into a theory about the attack on the CIA. Joan and Calder reach a resolution.
Annie heads to Azerbaijan with McQuaid to find an ex-CIA agent. Aggie acquires some disconcerting knowledge about a friend. Joan and Calder get into an argument.
Still undercover, Annie has her guard up when she accepts an invite to the Russian Embassy in Paris. Aggie endeavors to juggle more than one relationship. Joan sorts out details of Arthur's latest business trip.moreless
A mission in Paris is complicated by Auggie's past with a potential asset. Joan tries to play matchmaker for Calder, while Arthur heads abroad for his first operation with McQuaid Security.
Annie participates in a stakeout. The CIA discover that a member of the intelligence community might have leaked intel.
Annie and McQuaid join forces to get out of Venuzuela while Joan, Arthur and Caitlyn team up to extract them. Calder's secret affair assumes a new dimension.
Annie decides whether to work with McQuaid to apprehend a terrorist in Venezuela. The NCTC questions Auggie about an intelligence threat.
The team is on a hunt for a serial rapist with an odd fetish.
Team One continues the hunt for a bomber at large as team members, joined by EMS and the military, split up to deal with multiple bomb threats in a city already plunged into chaos.moreless
Team One faces the most challenging call of their careers when a series of bombs tears the city apart.
Team One is called in when an Emotionally Disturbed Person kidnaps his neighbor's baby, thinking it's his own daughter, and takes refuge on a ferry. Ed recounts the incident to a psychologist, as he desperately tries to find out whether being the constable that kills the subject when all other options are exhausted, makes him a monster.moreless
A senator is abducted during a bomb hoax and Team One discovers that the kidnappers are two farmers who want revenge against the senator when he plans on turing their land into an airport.moreless
Ed and Greg's sons come for a ride along and disobey a direct order from Sergeant Parker when he tells them to remain in the truck while Team One deals with an incident between three cops on an off-the-books mission to clean up the streets.moreless
Jules and Sam receive some personal news, but don't know whether to share it with the team. While the SRU is called in to stop some ex-soldiers robbing an armored truck with millions of dollars, they learn more about the background of the group leader who tries to maintain a place for ex-army men and women with nowhere to go.moreless
The team tries to help a young man with amazing memory who is taken hostage to help get to a weapon with "smart" bullets which can shoot a target even behind cover. The situation gets complicated when Ed himself is taken hostage.moreless
The team is called in when a car bomb explodes at a kid's birthday party. As it turns out the victim of the explosion was the head of a local biker community which is already under investigation. The team now has to protect the young CI who is trying to find out more about the next targets while handling the female detective involved in the case.moreless
Team One's efforts to save a kidnapped woman's life are dependent in large part on the abductor's brother, who holds a dark family secret. Meanwhile, a reluctant Ed is asked to meet with the mother of a teenage girl who was killed by Ed in the line of duty.moreless
Team One discovers that they need to take new security measures to protect the system they use to follow crimes after they are given acces to a crime about to happen.
Team One believes they are stopping a robbery in progress unaware that part of the robbers' plan is to escape their cruel leader. Their plan could make them his next victims and the team has to try to keep the robbers from harm.moreless
Team One has to rescue a doctor, but as they search Sam discovers a child in critical need of medical attention, and realizes that being taken hostage may be the only way to save him.moreless
Team One is looking for an armed and abusive man who has tracked down his ex-wife demanding to know where their daughter, who is celebrating her 18th birthday, is. The situation escalates when he drags his ex-wife to near the edge of a hotel rooftop, where Ed and the rest of the team face a huge moral dilemma. The dramatic conclusion leaves Team One questioning themselves, each other and even their jobs.moreless
A fire captain who feels nothing he does is good enough is given the chance to prove to himself and to an injured member of his crew that he can set things right.
Meanwhile, Greg Parker is still considering his decision to remain leader of Team One and doubts himself even more after his decision to allow the fire captain to return to the hospital to be with his injured friend has dire consequences.moreless
Greg Parker immediately faces suspension from the team after keeping the relationship between two team members a secret. Dr. Toth still doesn't feel Greg is fit to lead the team because of his own personal issues.
Jules goes inside a lab to see if she can help of former employer who believes he got ALS through unusual means or just by developing the symptoms of the disease.moreless
Team One is called in to try and stop a conflict at a psychiatric hospital where a stabbing has just taken place. In the commotion of subduing the stabber, the victim escapes from the infirmary taking one of the staff as hostage. They now have to deal with that patient, who has a history of violence and arms himself, and who wants to settle something with his best friend.moreless
When Spike answers Sam's sister's desperate plea for help, he is forced, at gunpoint, to help two criminals steal evidence from the fortress that is the Metro Evidence Depot. As Team One arrives at the Depot to answer a shots fired call, Spike is forced to help the two thieves escape, a situation not only endangering his life but and Natalie's, but also leading the entire team into grave danger.moreless
When stadium security guard Gil Collins defies Sgt. Parker and risks his own life by taking a hostage situation into his own hands, he complicates matters and draws Team One into a complex situation where nothing, especially his motive, is a it first seems.moreless
Team One must figure out how to get a Chinatown gang to release a local shop owner, then they also have to figure out how to get the one who shot the owner's daughter free as well.moreless
As Donna gets ready to walk down the aisle, things changed drastically. Donna learns some surprising news regarding a mentor she once worked with. Now Team One, with Donna's help, must try to keep the people close to her from getting killed and make sure Donna's emotions don't get in the way.moreless
Team One is alerted to a situation in a bank where a woman who appears under duress is withdrawing all her money. When she sabotages her own rescue and escapes with her tormentor, the team turn their attention to her family, who is also in danger. As they continue the investigation, the family's dark secret emerges, leading to an undercover assignment in which Ed risks his safety to diffuse a potentially deadly confrontation.
Meanwhile, Sgt. Parker tries to get to the bottom of Sam's unusual behavior, which includes openly questioning Ed's tactics.