Hamilton would write a total of 27 Matt Helm novels between 1960 and 1993 (with a 28th volume as yet unpublished). The books maintain a loose continuity between each other, although later volumes would downplay Helm's Second World War connections in order to keep the character up-to-date. In the late 1960s, several motion pictures starring Dean Martin as Helm were produced; these films were produced as comedies and contained little of Hamilton's concepts.
Over a period spanning from 1960 to 1993, author Alexander Hamilton penned a total of 27 Matt Helm novels.  While the books maintain a loose narrative thread, later installments in the series downplayed Helm's World War II background to align with contemporary times. In the late 1960s, several films featuring Dean Martin as Helm were released; these movies, however, deviated significantly from Hamilton's original vision and focused more on comedic elements than his intricate plotlines.