The Proving Ground by Peter Giles

The Proving Ground

A Lincoln Lawyer Novel

Peter Giles, Michael Connelly, Little, Brown & Company

Little, Brown and Company · Print & ebook · October 21, 2025

From #1 New York Times bestselling author Michael Connelly, the Lincoln Lawyer is back with a case against an AI company whose product may have been responsible for the murder of a young girl.

We earn from qualifying purchases.

Genres
Legal Thrillers, Tech Thrillers, Legal Fiction
Published
Little, Brown and Company, October 21, 2025

Nearest books

Matched by what the books are about, then ordered by what their readers also loved. Most of these share its genre: Legal Thrillers.

  1. The Gods of GuiltMichael Connelly77% match
  2. The ReversalMichael Connelly, Peter Giles68% match
  3. The Fifth WitnessMichael Connelly72% match
  4. 12 Months to LiveJames Patterson, Mike Lupica51% match
  5. The Brass VerdictMichael Connelly78% match
  6. Nash FallsDavid Baldacci51% match
  7. The PleaSteve Cavanagh56% matchAlso shares Legal Fiction
  8. Juror #3James Patterson, Nancy Allen53% match

Start with three books, and this one can be the first.

Members get a new edition every morning: a route out from their books to essays, research and talks, with the reason for each.

Start with this book

About this book

From #1 New York Times bestselling author Michael Connelly, the Lincoln Lawyer is back with a case against an AI company whose product may have been responsible for the murder of a young girl.

Continue reading

Following his “resurrection walk” and need for a new direction, Mickey Haller turns to public interest litigation, filing a civil lawsuit against 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, Mickey’s case explores the mostly unregulated and exploding AI business and the lack of training guardrails. Along the way he joins up with a journalist named Jack McEvoy, who wants to be a fly on the wall during the trial in order to write a book about it. But Mickey puts him to work going through the mountain of printed discovery materials in the case. McEvoy’s digging ultimate delivers the key witness, a whistleblower who has been too afraid to speak up. The case is fraught with danger because billions are at stake. 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.” Haller will take a similar gambit in court to defeat the mega forces of the AI industry lined up against him and his clients.

Franchise Pulse

Come here for

  • Lincoln Lawyer franchise pull
  • legal-crime blend with procedural momentum

Expect

  • mystery, thriller, action
  • series-adjacent satisfaction

Where it sits

Legal Thrillers92%
Tech Thrillers71%
Legal Fiction24%

Percentages are BookFrontier’s reading of the book.

Publisher categories

  • Police Procedurals
  • Crime Fiction
  • Legal Thrillers
Authors
Peter Giles, Michael Connelly, Little, Brown & Company
Publisher
Little, Brown and Company
Published
October 21, 2025
Format
Print & ebook
Reading lane
Police Procedurals