“Reacher” Season 4 premieres on Prime Video on 12 August 2026, with Alan Ritchson returning as Jack Reacher alongside a largely new supporting cast. The season follows Reacher after a troubling subway encounter draws him into a dangerous conspiracy involving powerful figures.

– Jack Reacher (Alan Ritchson): former Army investigator and the series’ central character.
– Tamara Green (Sydelle Noel): a Philadelphia investigator pursuing a suspicious case.
– Jacob Merrick (Christopher Rodriguez-Marquette): a New Jersey police officer seeking answers after his adopted daughter’s death.
– Russell Plum (Kevin Weisman): a secretive investigative journalist examining covert government activity.
– Lila Hoth (Agnez Mo): a woman searching Philadelphia for her estranged politician father.
– Amisha Hoth (Anggun): Lila’s mother and a former political dissident.
– John Sampson (Marc Blucas): a congressman and presidential nominee frontrunner with military links and hidden secrets.
– Elsbeth Sampson (Kathleen Robertson): John Sampson’s wife.