One year after Ryan Hardy's pursuit of serial killer Joe Carroll, a healthy and healed Ryan is living in New York City. On the surface, it appears Ryan's gotten his life back together. But deep down, his obsession with Joe continues to grow. Then, on the anniversary of Joe's death, a new murderous rampage leaves everyone shocked and determined to discover the truth.

After the tragic subway killings, Ryan’s obsession with the case becomes stronger than ever. Soon, mysterious phone calls bring him face-to-face with what may be his biggest threat yet. Meanwhile, revelations surrounding Joe’s new life are brought to the surface.

Ryan continues his search to find the correlation between the recent tragedies in New York City and Emma and the existing members of the Havenport cult, while the FBI becomes increasingly aware of his undercover agenda. Meanwhile, a shocking event leads Joe to put a new plan in action.

After the latest shocking revelation in the case, Ryan and Max attempt to put the pieces together and stay two-steps ahead of the FBI, despite Weston's constant warnings to stay out of the way. Meanwhile, Emma becomes even closer to Mark and Luke, while Joe and Mandy meet up with a follower in search of assistance.

In an attempt to learn new information, Ryan and Max capture a suspect. But complications lead to a game of dangerous cat and mouse. Also, Joe grows accustomed to his surroundings and establishes a plan of his own, while Emma realizes she is in dangerous company.

Looking for back-up and hoping to execute their plan, Ryan and Max contact the FBI. But Weston has other ideas, leading to a standoff between good and evil. Meanwhile, Joe's new relationship escalates into uncharted territory, and Luke finds himself in a troubling situation.

Ryan and the FBI continue their hunt for Lily Gray, and are forced to redirect their search when a new threat enters Max's life. Meanwhile, Joe, Emma and Mandy arrive at their latest hideout, but quickly realize things aren't what they seem.

After a tragic turn of events, Ryan attempts to find the man who originally taught Joe to kill, in hopes of finding new answers. Meanwhile, at the compound, Joe tries to get his bearings, while Emma and Mandy wait for him to reveal his new plan.

Ryan, Max and Weston discover information that leads them closer to uncovering the mole within the FBI - which results in complications of its own. Meanwhile, Joe and Micah execute a plan that threatens the Korban cult in order to announce a message to Ryan and the world.

As his power over the Korban cult grows, Joe sets a deadly plan in action using new acolytes to carry out his demands. Meanwhile, Ryan and Max devise a plan to contact Joe, in hopes of tracking down his whereabouts, and Weston meets with a face from the past.

A deadly massacre, thought to be sparked by Joe Carroll, leads Ryan and Mike into very dangerous territory. But as more details are revealed, they realize another leader might be on the rise. Meanwhile, Joe continues to train the Korban cult and confirms his new plans with Emma and those who doubt him.

After a series of public condemnations of Joe and his followers, Joe targets the son of a man who stands against him. Meanwhile, Ryan is faced with the shocking news of Claire's reappearance and Mandy makes a decision that leads her to a familiar face which could undo all that Joe has been working for.

Ryan tracks down the location of the Korban compound with hopes to infiltrate the cult and capture Joe Carroll, but all doesn't go exactly as planned. Meanwhile, Claire asks Carrie to deliver a message to Joe, and Weston makes a decision that will change the course of his life forever.

Joe Carroll puts his final plan into action, threatening the lives of many, as Ryan and Mike go to great lengths to stop him and prevent more innocent lives being lost. Meanwhile, Claire makes a decision that leads her into dangerous territory, and Mark and Luke attempt to figure out their next move.

Mark and Luke turn the tables on both Ryan Hardy and Joe Carroll, forcing the two sworn enemies to come together to save the woman they love.

With Joe Carroll awaiting execution on death row and all signs of his following erased, Ryan Hardy has moved on from the dark events of his past. But his newfound happiness is shattered when a series of brutally staged tableaus threatens to tear open old wounds. Ryan and his team are forced to unravel a twisted web of violence before it destroys them all - leading them to face a terrifying truth: Joe Carroll was just the beginning.

Ryan believes he has found the connection between Andrew and Mark, but he and the FBI are still unsure if - and how - Joe Carroll might be connected. Meanwhile, tension between Mark, Kyle and Daisy mounts and Ryan soon finds himself in a dangerous situation, in which facing the truth is the only thing that will set him free.

After a devastating loss, Ryan, Weston and Max aim to hunt down who is responsible and make them pay, leading Ryan to take a risk with deadly consequences. Meanwhile, Mark questions the loyalty of Kyle and Daisy, causing tensions to rise amongst the group.

As Mark, Kyle and Daisy plan to make a personal attack on Ryan, the FBI receives a tip leading them to a secret location, which gives them a leg up in the case.

On the day of an important trial, things go awry, causing the FBI to split up to hunt down a missing person. With his team breaking apart, Ryan enlists the help of a former enemy to defeat a greater one.

With their latest target on the run, Ryan and Mike follow a tip to a small town to investigate and confirm he isn't seeking protection. While in town, they both discover an even larger threat who has managed to avoid suspicion up until now. Meanwhile, Max struggles to make a confession.

With only a few days before Joe Carroll's execution, Ryan and Mike shift their focus to a new threat. Meanwhile, after being approved to start work again, Max rejoins the task force and comes dangerously close to a deadly menace.

The FBI closes in on a suspect whom they believe to be the culprit behind the latest murders, but Ryan believes the killer is still out there, leading him to dig deeper into dangerous territory. Meanwhile, Joe undergoes evaluation in the days leading up to his execution and a new threat tries to cover his tracks.

After the latest shocking discovery, Ryan finds himself being tracked by the new illusive killer and a game of cat-and-mouse begins leading them both back to Joe Carroll, for different reasons. Meanwhile, Max and Mike look for a stolen clue and Mark makes a shocking decision.

With Joe Carroll's execution day upon them, the team remains on edge, expecting that he won't go easily. Their fears are realized when a hostage situation at the prison forces Ryan to go in alone, as the whole world watches.

The investigation leads the team to a dangerous serial killer linked to Theo, while Theo and Penny seek refuge from an unknown source with the means of helping them disappear. Meanwhile, Ryan struggles with recent events, sending him into a downward spiral, and the search continues into which agent has been accessing Daisy’s laptop from inside the FBI.

An increasingly reckless Ryan continues his search for Theo, as Mark and Daisy discover information that leads them closer to the FBI than ever and puts Mike in a dangerous situation.

A deadly deal is made, but things don’t go as planned, and Ryan makes a decision for his future.

The FBI hunt for Theo continues and the stakes are higher than ever as some of their own come under attack.

As suspicions rise alliances are shaken and no one is safe in the harrowing final heart-stopping moments.