In a final showdown with George Zax, Billy and Patty seek justice for the victims of the opioid epidemic, no holds barred.

The trial concludes as former partners and old friends have their final showdown in court.

The judge gives Billy only a day to make a compelling offer of proof before he dismisses the lawsuit.

Billy scrambles to get his wrongful death lawsuit into court by any means necessary.

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.

With danger mounting around every corner, Billy has to decide whether to head directly to trial or take his chances with a continuance.

Billy has to go to great lengths to secure his physical evidence's safety and preserve his witnesses' credibility.

When Patty calls a surprise witness to the stand, the defense does everything they can to undermine the witness’s credibility.

As both sides begin their depositions, more secrets start to come to the surface, threatening to destroy everyone involved.

Billy puts Wade Blackwood on the stand and under oath, forcing him to admit every detail of his scheme to steal the state’s water.

Billy returns to his Big Law roots after Patty takes a job at a prestigious white-shoe law firm in San Francisco. Together, they try to take down one of America’s most insidious Goliaths: the opioid industry.

Flashing back to before the events of the season, Billy has a drunken weekend at the Rising Sun Hotel and Casino, crossing paths with the Blackwoods and their scheme to steal water.

On the night of the mayoral election, Billy and his team race to take down the people responsible before they become an unstoppable Goliath.

Patty finds herself on the hook for Billy’s behavior as he digs deeper into the case.

The unexpected death of an old friend takes Billy McBride to California’s Central Valley, where a record drought has made water more valuable than human life.

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.

Billy’s investigation into the Central Valley’s water problem threatens the launch of Diana Blackwood’s almond-based lifestyle brand.

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.

Held hostage by strangers and with no memory of how he got there, Billy has to make a harrowing escape from Mexico.

After a brutal loss, Billy decides to formally take on Julio Suarez's defense but, before he can go back to court, he must get his team back together.