One year after Joe Carroll's death, Ryan Hardy has moved on with his life. However, events catch up to him when three men wearing Carroll masks stage a bloody subway slaughter. The FBI want Ryan to consult but he claims to have no interest in the new investigation. Meanwhile, some of the surviving Carrolites try to puzzle out who the newcomers are, and Mike tries to deal with the guilt of Debra's death.
Mourning Rituals -- Bad Moon Rising, The Elliots -- Homebound, England Dan and John Ford Coley -- Nights Are Forever Without You, KC & the Sunshine Band
-- That's the Way (I Like It)
Mark and Luke play a game of cat-and-mouse with Ryan, setting a tableau of murder up and going after Lily. Meanwhile, Joe discovers that life in the Arkansas backwoods isn't all that it's cracked up to be.
Mike and Mendez object to Ryan hiding information from them and ban him from the case... and Lily. Meanwhile, Joe must decide what to do after killing Reverend Glenn, and Mark makes contact with Emma.
Joe turns to another of his followers for help... a follower who is close to one of the persons investigating the subway murders. Meanwhile, Ryan and Max get a lead on Giselle, and Emma meets with Lily.
As Joe and Emma settle in at Lily's manor, Ryan and Max capture Giselle and interrogate her for the whereabouts of her "family."
Concerned after Max narrowly escaped death, Ryan calls Mike and asks him to bring in the FBI to capture Lily and her family. However, Mike comes alone and warns that there is a mole in the FBI tipping off Joe and his people. Meanwhile, Joe and Lily have a falling out.
While Mendez accepts that Ryan is right about Joe having survived his "death," Lily sends someone to abduct Max as revenge on Ryan, who she believes is responsible for her son Luke's death. Meanwhile, Joe, Emma, and Mandy join a strange cult.
Ryan tracks down Joe's mentor at the boarding school where he grew up, while ducking reporter Carrie Cooke. Meanwhile, Joe brings influencing Micah at the Korban compound in the hopes of taking control of the cult.
Ryan, Max, and Mike draw close the spy within the FBI, but the suspect turns out to be someone they didn't expect. Meanwhile, Joe and Micah send Emma and two of Micah's followers out into the world to deliver Micah's message, a message that involves Carrie Cooke.
Songs: The Posies -- Come Right Along
Joe teaches his new religion to the Korban followers, and then sends four killers into New York to fulfill his prophecy of death in the streets. Meanwhile, Claire demands to return to New York to help in the search for her ex-husband... and kill him.
Joe's people launch a slaughter at a bakery, but Ryan soon realizes that they have an ulterior motive... and may not be connected to Joe. Meanwhile, Emma reinforces Robert's belief in Joe, Mandy makes contact with someone outside of Korban, and Claire demands to see Ryan.
Joe's followers give Carrie a new message to broadcast. When Ryan sees it, he works out who Joe is going after next. Meanwhile, Mark brings Mandy to Lily, and she demands to know where she can find Joe. And Claire discovers that Ryan has been with someone else since he believed her dead.
When Ryan fails to kill Joe, he lets himself be captured to find out what his nemesis' master plan is. Meanwhile, Mike and Max close in on Lily, and Mike is forced to make a life-or-death decision.
While Claire sets a trap for Joe, she's unaware that Joe has sent Robert and Emma to set a trap for his ex-wife. Meanwhile, Ryan and Mike trace Joe to a cathedral in New York and discover what he has planned.
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.