Former FBI agent, Ryan Hardy is called out of retirement to track down Joe Carroll after he escapes from prison. Hardy works closely with an FBI team, which includes young, razor-sharp Mike Weston. The investigation also leads Hardy back to Claire Matthews, Carroll's ex-wife and the mother of the criminal's young son, Joey. Hardy soon discovers that Carroll has an ever-growing cult of followers.

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.

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.

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.

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.

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.

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.

The Havenport Police Department is brought onto the case and Roderick's role as sheriff is called into question, which leads him to make a shocking decision that threatens the safety of Joey. Meanwhile, Ryan goes against the FBI, hoping to gain the trust of one of Joe's followers.

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.

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

Ryan Hardy, Agent Mike Weston and FBI Specialist Debra Parker, who is brought in to lead the investigation into Joe Carroll and his followers, dive deeper into the history of Carroll's psyche. To do so, they enlist the help of Carroll's ex-wife, and Hardy's former love, Claire Matthews. Meanwhile, Emma, Jacob and Paul keep Claire's son Joey at a house in the country as they prepare for their next move

When Claire receives a phone call that may lead her to find her son, the FBI and Ryan Hardy set their next move into motion, causing panic at the farmhouse. Meanwhile, Joe Carroll seeks a lawyer from his past to send a message that has deadly results.

In the explosive Season One finale, Ryan races to stop Joe Carroll before his endgame reaches a deadly conclusion. Meanwhile, Joe leads Claire to a special location and the ultimate showdown between good and evil takes place.

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.

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.

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's true intentions are revealed through a new follower, Charlie. As Ryan learns of Joe's plans, he tries to stall Emma, Jacob and Paul by taunting them in hopes of turning them against each other. Meanwhile, Emma makes a shocking decision.

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.

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.

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.

A new follower is found in Rick, who is on a determined path to follow through on Carroll's orders. Hardy and the FBI attempt to predict Rick's course of revenge, which leads to a surprising outcome. Meanwhile, Paul's jealousy over Emma and Jacob's relationship leads to a breaking point, and the origin of Hardy and Carroll's relationship.

With the help of attorney Olivia Warren, Joe Carroll makes a case against Ryan and the FBI to be transferred to a different facility, but Ryan suspects a larger plan may be at play. Meanwhile, Emma and Joey arrive at a meeting point and come across another one of Roderick's men who has a secret of his own.

Ryan, Parker and Weston prepare to storm the follower's mansion, but Joe already has an escape plan in action. Meanwhile, disguised followers create a diversion at the town evacuation center, which causes panic among the residents and leads to a dangerous kidnapping of one FBI official.