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

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

Billy and Patty take measures to protect a witness, while the partners at Margolis & True scramble to strengthen their case.

As Billy faces repercussions from his conduct, he is forced into a truce with an old adversary.

Billy goes to extremes to keep the case alive, and Sam questions whether bringing him on board was a good idea after all.

As Billy and Sam grow closer, he discovers that the opioid industry is keeping bigger secrets than he ever imagined.

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

In the final season, 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.

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.

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

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

Believing his client will soon be a free man, Billy joins Marisol for a romantic weekend in Mexico, only for his case to fall apart at home.

Billy finally gets a witness who can exonerate Julio, but he won't talk unless Billy can convince the prosecutor to give him a deal.

Billy tries a risky strategy to suppress the prosecution's two key pieces of evidence, hoping he can clear Julio's name before trial even begins.

When Billy learns the name of the real shooter, he has to turn to the FBI to help him bring his elusive suspect in for questioning.

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

Billy McBride is reluctantly pulled back into criminal defense when his friend's 16- year-old son is arrested for a double murder.

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

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.

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

The beginning of discovery unearths a startling new piece of evidence that threatens to unravel Billy's entire theory of the case.

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.

A burned-out attorney gets a second chance for redemption when he agrees to pursue a wrongful death lawsuit against the biggest client of his former law firm.