Son of the Border.

An honest rancher, after killing his best friend who's turned outlaw, takes his pal's orphaned younger brother into his own home. The boy, however, isn't aware he's now living with the man responsible for his brother's death. This 1933 RKO B-western, directed by Lloyd Nosler, stars Tom Keene, Lon Chaney Jr., David Durand, Julie Haydon, Edgar Kennedy, Charles King and Al Bridge.