At Quantico, the NATS attend a class with guest speaker Dr. Susan Langdon. Dr. Langdon is a former agent and profiler who tasks the trainees with looking at serial killer cases to find the one victim that doesn’t fit the case, but when Simon becomes too good at finding things that don’t belong, it’s his life that becomes endangered. In the future, Alex is interrogated by a highly sophisticated FBI team while Ryan’s life hangs in the balance

In the future, the FBI computer system is hacked and confidential files go public leading Alex to the conclusion that a second bomb is in play somewhere in NYC. Back at Quantico, the recruits are given individual assignments only to realize they are all connected as part of a lesson to look at the bigger picture.

It’s midterm exam time at Quantico where the NATS are given an explosive assignment which results in some people going home for good. In the future, Alex continues to try and clear her name, finding Nimah and Raina who provide more questions than answers leaving Alex and the world to wonder, “who can you really trust?”

The NATs learn surveillance by putting it into practice with Miranda and her troubled son, Charlie. Shelby tries to keep Caleb at a distance, but Raina opens the door to a closer relationship with Simon. In the future, Alex is helped when she tries to hack into an FBI computer.

The trainees leave campus for the first time while undergoing their first undercover assignment. With an evening full of unpredictable events, Alex and Ryan find themselves getting close while the recruits’ skills are tested. In the future, Alex decides to tell her side of the story and sits down for her first public interview leaving everyone watching to wonder who is really telling the truth.

At Quantico, the recruits are tasked with performing a hostage rescue training exercise that shakes Alex, making her question her ability and whether she should quit Quantico. While in the future, Alex continues to search for clues, finding one that questions the innocence of one of her closest classmates. But is her clue really what she thinks? No one is who they seem.

At Quantico, Alex finally receives information about her father and his FBI past, but in the future it’s her mother, Sita, who plays a key role when Liam convinces her to participate in a press conference on national television begging Alex to turn herself in. Also at “Quantico,” the NATS learn the art of profiling and focus on their classmates’ strengths and weaknesses, ultimately challenging their confidence and comradery.

Alex is on the run and must outsmart Liam and his team to get into her apartment for anything that could help clear her name. Meanwhile, in a flashback to Quantico training, the NATS are tasked with finding a needle in a haystack while looking for potential threats to national security.

A diverse group of recruits has arrived at the FBI Quantico Base for training. They are the best, the brightest and the most vetted, so it seems impossible that one of them is suspected of masterminding the biggest attack on New York City since 9/11.

Reeling from the death of his friend, Luther races to save the others from Cornelius’s terrible retribution. With Luther’s increasing absence from the case, Halliday heads the hunt for a killer on the loose – a killer determined to complete his final macabre masterpiece.

With his friend in peril and a young woman kidnapped by the relentless serial killer, can Luther protect the innocent while preventing Cornelius’s violent revenge from consuming him? Who is Luther willing to save, and who can’t he bear to lose?

Luther must confront a demon from his past, as both the police and Cornelius converge on his home. With Halliday convinced that the body in the morgue isn’t their killer, can Luther put his own troubles to one side and find the true murderer before he strikes again?

A new spate of nightmarish murders brings DCI John Luther to once again face the depths of human depravity on the streets of London. As the body count rises, and gangster George Cornelius applies his own pressure, can Luther catch the killer and save his own neck?

On the trail of a horrifying killer, Luther finds himself haunted by ghosts from his past.

Away from the police force, Luther receives a visit from Detective Chief Inspector Theo Bloom and Detective Sergeant Emma Lane. They bring him some new evidence that will draw him back to London to find the truth. The team tracks a cannibalistic serial killer.

Marwood makes his vendetta personal – targeting Luther and those closest to him, raining destruction on everything he touches. Stark and Gray arrive just in time to hurry Mary to a secret place, but is her safety really Stark’s priority, or is she just a pawn in his game to lure Luther to him?

In what looks like a gangland crime – two hoodies are shot at close range. But an un-connected crime sees Luther make a un-connected connection that might provide the real answer to what happened.

Luther’s date with Mary, and the promise of romance, is interrupted by the news of another murder. The killer has struck again – the number of victims is escalating fast.

Luther investigates a the case of a fetishist who is murdering women which is similar to an unsolved case from the 1980s. The team attempt to catch the copycat killer, whose murderous spree has only just started.

Luther’s personal and professional life spirals out of control as he tries to cover up Toby’s death and appease a suspicious Baba. He must also protect Jenny from any further harm. At work there’s also a killer at large whose actions are ruled by his dice. How do you stop a man who sees life and death as a game and whose actions can’t be predicted?

As Luther’s affection for Jenny grows, so does his determination to protect her and help her back on her feet. Baba, however, is determined to keep Luther on a tight leash. To add to Luther’s difficulties, he is called in to investigate a man whose brutal and escalating murders seem to have no motive, leaving Jenny alone and vulnerable.

Luther must rescue Ripley, abducted by Cameron, in time to prevent Cameron’s final murderous set piece. But Jenny’s ruthless and vengeful boss is demanding compensation for stealing her protege. Luther is torn; will his visionary mind provide the team with the tools to save Ripley and the killer’s intended victims, or will his focus be compromised?

Still plagued by the death of his ex-wife, Luther returns to work to face a surreal and nightmarish case of a masked murderer determined to enter into folklore. As the body count rises, Luther must use all his skills to stop the killer, at the same time trying to rescue an old acquaintance’s daughter from the dangerous world of prostitution.

Luther, suspected of murder, goes on the run to try and prove his innocence. With Alice’s assistance, they set out together to exact revenge on the real killer.

When a wealthy couple are taken hostage, Luther must try to avert a disastrous chain of events. However, what he doesn’t know is that it will soon become very personal.

When a serial killer goes on the rampage, Luther must put his personal life aside and delve inside the murderer’s mind to discover what is driving him to kill so many girls, and why.

John Luther must catch a Satanic occult killer accused of kidnap and murder. However, with a young mother’s life at stake, Luther must use all his skills to build an airtight case.

A gunman begins murdering uniformed police officers, prompting the detective to taunt the killer on TV in the hope of inspiring him to turn his anger on him and come out into the open. To his horror, Luther also learns that Alice Morgan has been investigating his past – and is threatening to tell Zoe what she has discovered.

Luther returns to work after a traumatic arrest to investigate the murder of a former child genius’s parents, and quickly deduces that their daughter is responsible. However, unable to find evidence to convict, he becomes embroiled in a battle of wits with the suspect – who has set her sights on him and his estranged wife.

Vanessa and Sam face off to find the Last Elder, with Scarlett, Axel and Mohamad caught in the crossfire.

Scarlett is reunited with Axel but he is badly injured before they can find Vanessa. A mysterious man helps them find their way. Flesh and Jolene are fugitives on the run from Blaktek.

In his hometown, Axel fights both his tragic past and a vicious pack of Daywalkers. Sam can’t find Mohamad, and takes his anger out on Chad and Mike.

Vanessa, trapped in an abandoned slaughterhouse, wrestles between the light and dark sides of her own self before she can move forward on her path to find the Final Elder.

Doc and Jolene clash with Denver authorities over the repellent; Flesh chooses to face his past; Axel struggles with leaving Scarlett behind; Ivory and the Sisterhood infiltrate Denver.

On a distant island, Vanessa and Scarlett battle the Third Elder; Vanessa makes a choice about her path forward, one that Scarlett does not agree with.

Sam approaches his destiny. Hohamad tries to escape her servitude and imprisonment. Axel leads the San Francisco refugees to Denver. Ivory and Scan assume control of the Daywalker horde.

Vanessa has a final showdown with the Second Elder in San Francisco. In Denver, Flesh, Doc, Julius and Jolene learn that even in a Safe-Zone, life isn’t easy.

In San Francisco, Vanessa, Scarlett and Axel find and battle against the Second Elder’s forces. In Denver, Flesh, Doc, Julius and Jolene rejoin American civilization as best they can.

Sam comes to realize his dark destiny and tries to groom Mohamad to be a worthy partner. Scab and Ivory are bestowed Daywalker powers and return home to find the Sisterhood in ruins.