In Too Deep is the twenty-ninth novel in the bestselling Jack Reacher series, written by Lee Child and Andrew Child and published by Penguin Random House. The paperback edition was released on April 22, 2025, and contains 352 pages.

Jack Reacher wakes up alone, in the dark, handcuffed to a makeshift bed. His right arm has suffered major damage, his few possessions are gone, and he has no memory of how he got there. The last thing Reacher can recall is the car he hitched a ride in getting run off the road — and the driver being killed. His captors assume he was the driver's accomplice and patch up his wounds as they plan to make him talk. A plan that will backfire spectacularly.

A #1 New York Times Bestseller, In Too Deep delivers the fast-paced action, bold moves, and relentless tension that fans of the series have come to expect. Don't miss the hit streaming series Reacher on Prime Video.