Oh Doctor! (1917)

Instead of a having a good time at the horse-races with his wife and his pampered son Junior, the prosperous Dr. I. O. Dine ends up losing all his money, after betting on the same losing horse with a reckless horse-racing gambler. However, as the gambler and his femme-fatale sweetheart refuse to take their financial loss lying down, they devise a bold plan so they won't need to return home empty-handed. But the ever-watchful Junior already knows much. Can he save the day?