One More Train to Rob (1971)

Harker Flet teams up with Timothy X. Nolan, Katy, and three other men to pull off a heist, stealing $40,000 in cash and jewelry from a train in the gold-mining era of 1880s California. The group scatters to avoid capture, but Harker is betrayed, arrested, and imprisoned for two-and-a-half years. Upon his release, he embarks on a quest to track down Katy and Nolan, determined to reclaim his share of the stolen treasure. As he navigates a treacherous path, old alliances and betrayals come back to haunt him.