The fourth season concludes with Arthur visiting a psychiatrist and recalling via flashback a disturbing encounter with his dad that may explain Arthur’s abrasive personality.

As Billy and Patty close in on the Blackwoods, Wade tries to cover up their crimes while Diana makes one final, desperate play, regardless who gets in her way.

Billy and Patty grill the Blackwoods in their depositions, shining a light on their complicated relationship and how they obtained ownership of the county’s water supply.

As Billy and Patty make their first appearance in court, their class action is threatened when they walk into traps set for them by the Blackwoods.

As Billy and Patty begin a class action lawsuit against the corporate farmers, the Blackwoods start dealing with everyone who gets in their way, including Billy.