In June 1977 it was announced film rights had been purchased by Lorimar Films, the filmmaking arm of Lorimar Productions, best known for its work in television. Mark Robson, who had just produced and directed the hugely-successful
disaster film Earthquake and had made another successful train set movie (''
Von Ryan's Express''), signed to produce and direct.
Jerry Gershwin was the Lorimar executive originally responsible. Abraham Polonsky wrote the script. Robson called the novel "rather sprawly for film" and "very difficult to synthesize into a motion picture. What Abe brought to it was unity. He has given the characters better motivations which means the total work is better motivated." Robson added the film "does make a political statement in a way... The movie will really come out for those who want to live in peace and co operation." Shooting started in
Munich on 27 February 1978 and also took place in Milan and
Venice. Filming was physically tough, complicated by increased security caused by terrorism in Europe, and Robson's deteriorating health. The movie had been filming for 65 days in Europe, with ten to go, when Robson fell ill. He was flown to a hospital in London where he later died of a heart attack on 20 June 1978. He was 64 years old. "He sure went with his boots on," said Marvin. Mike Connors said Robson's death "was not unexpected. We could see him go downhill from day to day. The lack of communication on a European picture is terribly exhausting." Lorimar Films' President
Peter Bart called in
Monte Hellman to finish the direction and
Gene Corman (
Roger Corman's brother) was enlisted to complete Robson's duties as producer. Hellman had recently helped complete
The Greatest after the death of its director,
Tom Gries. He had worked a number of times for Gene Corman, who was preparing another film for Lorimar,
The Big Red One. John Dykstra was hired to stage an avalanche using models. Then on 28 August 1978 Robert Shaw died of a heart attack in Ireland. He was 51 years old. "We had to shoot three new live action scenes plus all the special effects scenes and all of the avalanche stuff, and so it was a pretty complicated," he said. "It was the biggest picture I had worked on. I learned a lot on shooting really complex special effects, with miniatures and so forth, combining miniatures and live action." Hellman, Corman and Rietti were not credited for their work, but the film's end credit contains a note stating: "The producers wish to express their appreciation to Monte Hellman and Gene Corman for their post production services."
Dorothy Spencer, Robson's long time editor, was reportedly replaced by Garth Craven. She is not listed on the credits nor is the original cinematographer,
Jack Cardiff. ==Reception==