Lawman J.D. Cahill can stand alone against a bad-guy army. But as a widower father, he's on insecure footing raising two sons. Particularly when he suspects his boys are involved in a bank robbery...and two killings.Filmed on location in the high desert of Durango, New Mexico, Cahill: United States Marshal offers a hearty helping of the stoic charisma that made John Wayne a long-time box-office champion. Summer of '42 discovery Gary Grimes - as Cahill's rebellious older son - joins a cast of tough-guy favourites (Neville Brand, Denver Pyle, Harry Carey Jr. and George Kennedy) and such other Hollywood greats as Marie Windsor and Jackie Coogan in a deft blend of trigger-fast action and heroic sentiment.