Brace Up (1918)

Colonel Court, an agent in the Secret Service, is distressed by the occasional lapses of courage in his son Henry, a college athlete. Unknown to him, Henry's sweetheart Ellen is also an agent working on a case involving a radium smuggler, "National" Jim. To build his son's character, Court puts him on the same case that Ellen has been assigned to, but his courage again fails him. Henry decides to turn to the powers of the psyche and hires three men to communicate power and courage to him through intense concentration. The scheme works: Henry enters Jim's house in time to defeat him in a fight, locate the hidden radium and save Ellen.