The film's production was frequently delayed because shooting commenced without a finished script. Wilson quit early in the production, and playwright Beverley Cross worked on the script in the interim before Bolt took over, although none of Cross's material made it to the final film. A further mishap occurred when Bolt was arrested for taking part in an anti-nuclear weapons demonstration, and Spiegel had to persuade him to sign a recognizance of good behaviour to be released from jail and continue working on the script.