Shot in Techniscope as it was cheaper than CinemaScope.
Prologue: "The history of the early West written in blood, hardship, cowardice and heroism records the names of many men of courage and valor. Among them are United States marshals who quietly and with conscience and compassion opened new frontiers from the Mississippi to the Pacific. One of these was Johnny Reno. This is a chronicle of but two days in his two-fisted fight to establish truth and justice."