T. Boone Pickens, legendary Texas oilman and infamous corporate raider from the 1980s, climbed the steps of the Reeves County courthouse in Pecos, Texas in early November 2016. He entered the solitary courtroom and settled into the witness stand for two days of testimony in what would be the final trial of his life. Pickens, who was 88 by then, had made and lost billions over his long career, but he’d come to Pecos seeking justice from several other oil companies. He claimed they cut him out of what became the biggest oil play he’d ever invested in—in an oil-rich section of far West Texas that was primed for an unprecedented boom. After years of dealing with the media, shareholders and politicians, Pickens would need to win over a dozen West Texas jurors in one last battle. To lead his legal fight, he chose an unlikely advocate—Chrysta Castañeda, a Dallas solo practitioner who had only recently returned to the practice of law after a hiatus borne of disillusionment with big firms. Pickens was a hardline Republican, while Castañeda had run for public office as a Democrat. But they shared an unwavering determination to win and formed a friendship that spanned their differences in age, politics, and gender. In a town where frontier justice was once meted out by Judge Roy Bean—“The Law West of the Pecos”—Pickens would gird for one final courtroom showdown. Sitting through trial every day, he was determined to prevail, even at the cost of his health. The Last Trial of T. Boone Pickens is a high-stakes courtroom drama told through the eyes of Castañeda. It’s the story of an American business legend still fighting in the twilight of his long career, and the lawyer determined to help him make one final stand for justice.