The proving ground

"Following his "resurrection walk" and quest for a new direction, Mickey Haller turns to public interest litigation, filing a civil lawsuit against Tidalwaiv, an artificial intelligence company whose chatbot told a sixteen-year-old boy that it was okay for him to kill his ex-girlfriend for her disloyalty. Representing the victim's family, Haller sets out to expose the lack of guardrails in the exploding and mostly unregulated AI business. Along the way he joins up with journalist Jack McEvoy, who wants to write a book about the trial. When Haller puts him to work going through a mountain of discovery material, McEvoy's investigative expertise uncovers a whistleblower who has been too afraid to speak up. But with billions at stake, the case is fraught with danger, as Tidalwaiv will go to any lengths to stop Haller in his tracks. It is said that machines became smarter than humans on the day in 1997 that IBM's Deep Blue defeated chess master Garry Kasparov with a gambit called "the knight's sacrifice." Driven by his sense of mission, Haller must use a similar strategy in court to defeat his most powerful opponent yet"--