Der Silbersee (The Silver Lake), a play with music by Kurt Weill
In most of the film versions the novels were reworked to a great extent, some movies using only the names of characters invented by Karl May For example, in the book Der Schatz im Silbersee (The Treasure of Silver Lake) the main character was called "Old Firehand" – in the movie he was renamed "Old Shatterhand" (played by American actor Lex Barker) after the more famous character.