A search for an elusive serial killer leads the TAU to a shocking revelation. Also two team members return to work.
The team goes after a suspect who could be linked to a number of murders. Meanwhile, Beth must make a decision about her future with the LAPD while still coping after her attack. Also, Vicky reveals the real reason she moved to LA.moreless
The race is on to rescue Beth, who is fighting for her life against Ray, who has sinister plans for her.
The team tries to help a young woman when it looks like she is being stalked by not just one person, but a whole group of them.
After a high school coach receives threading text messages and is almost crushed by the school's bleachers, the clues lead to a teenage girl who has a rocky relationship with her boyfriend. The team starts to investigate and learn some dark secrets about the teen's life. Meanwhile, Perry and Ray start to think of a plan to help them get their hands on Beth.moreless
A couple who just got engaged run into trouble when the girlfriend's engagement ring is stolen and they believe that the culprit is a person who has been stalking them for quite some time now. When the team is called in to investigate, they believe that a jealous ex is the cause of this, but they soon find out that there is more to these stalkings than just love. Meanwhile, Trent starts to become jealous over Jack and Amanda spending so much time with each other.moreless
Beth and Jack investigate the break in of a popular anchorman's home after his stalker sends a video of his daughter to his phone. Perry learns more insight about Beth's past.
When a bus driver is beaten up, the team soon discovers that it might be connected to a rape case that happened many years ago. Meanwhile, Beth tells Tracy the truth about her new boyfriend.moreless
A psychiatrist believes that he is being stalked by one of his patients who is in love with him, but the team starts to believe that there is more to these stalkings than just obsession. Meanwhile, Beth begins to dig deeper to her own stalking case and finds a shocking discovery.moreless
The team investigates the harassment of a former skinhead that may be caused by one of his former followers.
The team goes after someone who has been stalking a young teenage girl, only to find out that they are actually after her little brother. Meanwhile, Beth gets an unexpected visitor at work.moreless
New York Detective Jack Larson joins the TAU team in Los Angles to help them catch a stalker who burned a young woman alive in her car. Meanwhile, Lieutenant Beth Davis must deal with a young college student who has been stalking his old roommate.moreless
When Ellen is about to start the president operation, she must make a difficult choice...
Sandrine's double game is revealed which offers to Duncan a way to turn the situation to his advantage
Ellen decides to not kill the president but to help Duncan to get his bone marrow in exchange of her family safety.
But Nina learns about Duncan's plan...
When Brian succeeds to go to the police to reveal the complot, Burton shows up and exposes the kiss between Ellen and Duncan.
When Duncan and his team must travel to New York to prevent another unit to eliminate the President before them, all the Sanders must stay locked...
One member of the President's staff si murdered which increase the risk of theDuncan's assassination plan.
Ellen searches in Nina's medical records to find a cure: a donor...
As investigators close in into the conspiracy to kill the president, Duncan is given a difficult task. Also, Ellen recieves something from Duncan.
Alice takes advantage of Duncan's situation and confronts his wife. Creasy has an important meeting.
Ellen and Brian work on a new plan to try to escape from their current situation. The Assistant District Attorney gets important information from Archer's accomplice.