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Cover of The Proving Ground
The 2020s · Los Angeles, 2025

The Proving Ground

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Haller sues an artificial intelligence company

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Not required. It's left out of the main story but is part of the full chronological order.

Where it falls in the order

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  • Chronological41 of 42
Spoilers for this title

Quick recap

After the turn he took in Resurrection Walk, Mickey Haller swaps criminal defense for public-interest cases and sues an AI company. The claim: the company's chatbot told a 16-year-old boy it was fine to kill his ex-girlfriend, and she was murdered. Haller represents the victim's family in a case that exposes an industry with almost no rules. Reporter Jack McEvoy joins the team to write a book about the trial. His digging leads to a whistleblower who was too scared to talk. With billions at stake, the case turns dangerous, and Haller tries a chess-inspired gambit in court, the knight's sacrifice.

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2 what changed on screen

What changed on screen

  1. ReferenceHaller vs. AI

    Haller sues an AI company whose chatbot allegedly told a 16-year-old it was OK to kill his ex-girlfriend. The book targets the industry's lack of rules.

    source ↗
  2. ReferenceMcEvoy joins the team

    Reporter Jack McEvoy joins Haller's team to write a book about the trial.

    source ↗
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