Voittamattomat veljekset was released in the year 1965。Voittamattomat veljekset is also called as The Sons of Katie Elder, Quatre fils de Katie Elder, Katie Elders 4 söner, Hijos de Katie Elder, Fire tapre sønner, Cuatro hijos de Katie Elder, 4 figli di Katie Elder, Vier Söhne der Katie Elder。

The Elder boys return to Clearwater, Texas for their Mother's funeral. John the eldest is a well known gunfighter and trouble follows him wherever he goes. The boys try to get back their ranch from the towns gunsmith who won it from their father in a card game with which he was shortly murdered there after but not before getting through the troubles that come with the Elders name.

Voittamattomat veljekset actors and actresses include Dennis Hopper, Earl Holliman, Martha Hyer。