Troubled Production: Arthur Penn, the original director, quit early on after a dispute with Paddy Chayefsky, who was upset with some of the changes he'd wanted to make. John Dykstra quit as well, and Bran Ferren had to do the special effects on a lower budget. Once Ken Russell was hired to actually finish the film, he was in a situation where, if he changed so much as one word of the script, he'd've been sued, so he resolved it by having the actors deliver some of the more pretentious dialogue very rapid fire. Chayefsky didn't sue, but was still pissed enough to petition the Writers' Guild to use his given name, Sidney Aaron, in the credits as his pseudonym. The experience of shooting some of the scenes was very trying physically for the actors. Columbia, who had started the film, washed their hands of it and Warner Brothers picked it up. The producer was nonetheless upset that they decided to shove it into the Christmas season rush rather than wait until the spring when he there would be less competition for that kind of film.