A recently paroled master thief assumes the identity of Lucas Hood, sheriff-in-waiting of Banshee, Pa. Keeping his history a secret, Lucas befriends boxer-turned-bartender Sugar Bates, and settles into his new life as Banshee’s sheriff. Lucas inadvertently gets tangled up in the rampant corruption of shunned Amish gangster Kai Proctor, while keeping a vigilant eye out for Mr. Rabbit, the New York mob boss who wants revenge against Lucas and former partner and lover Carrie for the jewel heist that landed Lucas in prison.
Hanson decides to hold a rave in an Amish barn, selling homemade E pills stolen from Proctor to Banshee youth including Deva, Carrie’s rebellious daughter. Catching wind of the plan, Lucas and his team orchestrate a raid, but the effects of a tainted batch of pills send many revelers into convulsions, with one notable fatality.
A mixed martial arts title bout is being planned at the local Kinaho Moon Casino, run by tribe leader Benjamin Longshadow and his son. Huge profits are anticipated for Banshee investors, but the enterprise is threatened when the champion angers Lucas.
A botched museum heist in Harrisburg has unintended consequences, as Lucas, Carrie and Job renew their partnership. After coercing redneck henchman Arno to offer up incriminating evidence, Lucas and Emmett arrest Proctor for Hanson’s murder, but are detoured on the way to the jail.
A band of marauding bikers crashes the annual Banshee Spirit Festival, with deadly consequences, sparking Lucas and Siobhan to meter out vigilante justice. Burned after losing his key witness against Proctor, Lucas is further dismayed when an FBI agent arrives to monitor the situation. Rebecca Bowman, torn between passion and her Amish roots, finds a kindred spirit in the sheriff.
An ex-con from Lucas’ past passes through Banshee, triggering memories about the Albino, a brutal insider enlisted by Rabbit to make Lucas’ prison life a living hell. Proctor turns to extortion when a reverend refuses to sell his home to make room for a casino hotel.
Lucas’ cover is threatened when Carrie decides to give him over to Rabbit in an effort to protect herself and her family. A drug store robbery turns into a full-blown hostage crisis at the high school, with Deva and Mayor Kendall’s wife among those whose lives are imperiled.
Carrie urges Lucas to let go of the past, even as an increasingly suspicious Gordon is hell-bent on uncovering hers. Cast out of her Amish home, Rebecca turns to Proctor to give her a new start in Banshee. A surprise visit from Rabbit’s lieutenant brings back a flood of memories for Carrie. As his family keeps vigil for the ailing Benjamin Longshadow, Alex gets a surprise visit from his sister.
As Rabbit closes in on Carrie and Lucas, Carrie flees the hospital in a desperate attempt to collect her family and get them out of town. Kai introduces Rebecca to the business world, and sends Lucas a message about fooling around with his niece. Alex Longshadow recruits a Proctor thug with gambling issues to deal with a work-stoppage problem at the casino.
Recalling a series of prison therapy sessions that fueled his hatred of Rabbit, and pressed by Xavier’s insistence that the FBI handle a kidnapping case, Lucas makes a decision that will change the collective fate of Carrie, her family, Sugar, Job and the entire Banshee police force. A special delivery at Alex’s doorstep leads Nola to reconsider her future. Kai teaches Rebecca the power of telecommunications.
In the aftermath of their bloody shootout with Rabbit, Lucas, Carrie and the Banshee Sheriff's Department are interrogated by the FBI. Proctor sets his sights on persuading Rebecca to return to his care. As Gordon stews over his wife's betrayal, Deva shows off her resourcefulness.
Spurned by Deva and Gordon, Carrie is forced to take up a new residence. With his leadership abilities questioned, Alex ramps up his efforts to recover the money stolen in the casino heist. Siobhan relives a nightmare when her ex-husband shows up looking to reconnect. Lucas is asked to return Proctor's favor.
A shocking murder near an Amish farm fractures relations between the Kinaho tribe and the Amish, who are forced to rely on Proctor to fend off a vengeful mob. Investigating the crime on Kinaho turf, Lucas and his deputies find themselves confronted by uncooperative gang members and their imposing leader. Carrie welcomes an unexpected visitor, and Lucas deals with the sudden appearance of a most unwelcome one.
Following a lead, Lucas visits a strict Amish school teacher who might have insights into the murder of a Kinaho tribe member and the disappearance of Solomon Bowman. Emmett and Siobhan find transferring a prisoner more difficult than expected. Rebecca copes with the pain of her parents' rejection. Proctor offers Alex a peace offering. Nola delivers a final blow for justice.
Lucas considers moving on after he and Carrie take a detour on their drive back to Banshee. Racine recalls the botched case against Rabbit that has haunted him for years.
When Jason’s past catches up to him, Lucas decides to make a deal to save the boy’s life, and maybe his own. In the absence of Carrie, Gordon and Deva’s lives spin out of control. Proctor teaches Rebecca a hard lesson in allegiance.
Lucas attempts to bring down Proctor's ecstasy operation by rattling the regulars and dancers at the Savoy strip club. Carrie, Deva and Gordon unite over a family crisis. Alex receives a no-confidence vote at tribal council. Job exhibits an explosive side.
An illegal search warrant helps Lucas bust Proctor, but at a cost. Sharp and his skinheads look for payback against Emmett, testing the limits of the deputy’s patience. Carrie provides the cash for Max’s treatments and takes a small step towards thawing out her relationship with Gordon and Deva. Job finally gets a lead on Rabbit.
In New York, Job drops in on a priest with ties to Rabbit, taking a hit for his troubles. Carrie's relationship with Gordon faces a new test in the wake of another revelation. Burton silences one traitor, but another eludes him. Alex vows to deliver evidence to keep Proctor behind bars. Emmett moves on, while Brock looks to move up. Lucas and Carrie brace for an epic showdown, as does an NYPD captain with ties to their past.
Fueled by painful memories that led them to the point of no return, Lucas and Carrie steel themselves for the fight of their lives against a vengeful Rabbit and his ruthless soldiers. Rebecca proves her allegiance as Proctor returns home.
Lucas becomes immersed in a new Banshee crisis involving a vicious serial murderer.
Carrie embarks on a vigilante crusade; Brock eyes Lucas in the serial-murder case.
Lucas and Carrie enlist Fat Au in a last-ditch attempt to track down Job.
Carrie strikes again; Bunker treads on thin ice; another grisly murder rocks Banshee.
Calvin is tested by Watts' mercenary partnership with Proctor, whose promise to the Colombians has taken a severe hit after the torching of his factory. Following separate leads in the serial-killer case, Dawson and Lucas converge in a members-only Goth club replete with painful SM initiation rites. Proctor, through Burton, sends a forceful message to his Amish kin. Brock vows justice in a televised press conference. Cruz scopes out Carrie's fortress while Sugar helps a displaced Lucas find familiar lodgings.
With help from Lucas, Dawson narrows her search for Declan Bode, a Satanist “person of interest” in Banshee’s serial murders. An emboldened Calvin throws down a gauntlet to Proctor and Kurt. Carrie’s recent vigilantism ends up putting both her and Deva in peril.
Fearing for Dawson’s safety, Lucas and Brock ramp up their efforts to hunt down Bode. With the Brotherhood poised to go to war with Proctor, Kurt looks to keep Maggie safe while Calvin takes out his frustrations at the office. Job settles a score with Leo Fitzpatrick, a Camp Genoa adversary.
Resolved to leave Banshee, Lucas learns that the murder case he thought was finally closed may in fact be opening again. After a tense faceoff with Calvin and the Brotherhood, Proctor looks to finalize his deal with the Colombians. Carrie takes aim at one final act of vengeance. Brock demands allegiance from Bunker as Banshee braces for an uncertain future.
