Prime Video's action series 'Reacher,' starring Alan Ritchson in the titular role, will premiere its fourth season on August 12. The new season will be based on Lee Child’s novel "Gone Tomorrow."

The season premiere will feature the first three episodes, with subsequent episodes releasing weekly. The season finale is scheduled for September 16, which coincides with the premiere of the spinoff series "Neagley."

Season 4 introduces new cast members, including Christopher Marquette as Jacob Merrick, Sydelle Noel as Tamara Green, Kevin Corrigan as Detective Docherty, Agnez Mo and Anggun as Lila and Amisha Hoth, Kevin Weisman as Russell Plum, Marc Blucas as John Samson, and Kathleen Robertson as Elsbeth Samson.

Previously announced cast member Jay Baruchel exited the series due to a personal matter but has been confirmed for the upcoming fifth season. Christopher Marquette stepped in to fill the role.

The series has also been renewed for a fifth season, which will draw from Lee Child’s Jack Reacher novel "Make Me." This upcoming season will feature new series regulars Jay Baruchel, Kevin Durand, Amanda Ip, and Ciara Bravo.

'Reacher' is available for streaming exclusively on Prime Video. New subscribers can access a 30-day free trial of Amazon Prime, which includes Prime Video access, free two-day shipping, and other benefits. After the trial period, Amazon Prime costs $14.99 per month or $139 per year. Young adults aged 18-24 are eligible for a discounted Prime for Young Adults membership at $7.49 per month after a six-month free trial.