Alan Hale Jr. plays the son of Porthos here. His father, Alan Hale, appeared in The Man in the Iron Mask as an aging Porthos. When that film was remade as The Fifth Musketeer, that role was taken by Alan Hale Jr.. In that same movie the role of an aging D'Artagnan was played by Cornel Wilde, this picture's son of D'Artagnan. Also here, the elderly Porthos is played by Moroni Olsen, who played that character in his younger days in the film of the original Dumas novel, The Three Musketeers.
Completed in 1950, but not released until 1952.