The film's producers were unhappy with the original score, so they hired Craig Safan at the last minute to compose a new score for the movie. He was given only one week to get it done.
Marjoe Gortner while trying to strangle Phil Hoover, including Robert Lansing trying to get control of the Rolls-Royce in the driving scene, and all three of them accidentally ended up breaking Randi Oakes's nose during the fight causing her to fire a snub nose revolver.
Randi Oakes ended up having her first Rhinoplasty after the Rolls-Royce driving scene was filmed.
A SeaFlite hydrofoil appears later in the film. SeaFlite started operating jet powered hydrofoils in Hawaii in the middle of 1975 but stopped operating by the end of the decade due to consistently rough surf and high maintenance costs.