It was one of four films starring Dean Martin as Helm, and like the other three films the filmmakers chose to make the movie into an action comedy only very loosely based upon the novel (no incident such as Helm's accidental beating death of a female agent occurs in the movie).
This film was part of a series that featured Dean Martin as Helm, and it followed a similar format to the other three movies in the series, which were action comedies loosely based on the novel.