The clerk at the train station is assaulted and left tied by four men, then they rob the train threatening the operator. (They) take all the money and shoot a passenger when trying to run away. A little girl discovers the clerk tied and gives notice to the sheriff, who at once goes along with his men hunting the bandits.Source: TMDb
Currently, you can only stream The Great Train Robbery on Kanopy in the United States.
Unfortunately, you cannot buy or rent The Great Train Robbery on any of the streaming services in the United States at the moment.
The Great Train Robbery was released 118 years ago in 1903.