In 1962, Toho purchased a script from an independent producer from America named John Beck called "King Kong vs. Prometheus". Beck had stolen the story treatment (which was originally called "King Kong Meets Frankenstein") from Willis O'Brien and had George Worthing Yates flesh it out into a screenplay. Toho wanted to have King Kong fight their own monster Godzilla instead of the giant Frankenstein monster in the original story and, after working out a deal with Beck as well as RKO, the copyright holder of King Kong at the time, produced "King Kong vs. Godzilla".