I provided the above-pictured box art for this Criterion release, so you may be interested in the final product. RJ’s review covers it very well:
The story’s pretty well-known- in the early 1960s, not long after their disfiguring accident and entry into the public eye as the short-lived “science vigilante” group the Fantastic Four (Reed “Mr. Fantastic” Richards, Susan “Invisible Girl” Storm-Richards, Ben “The Thing” Grimm and Johnny “The Human Torch” Storm) fell upon some financial hardship, due to poor investments. Monarch/industrialist/part-time terrorist Prince Namor of Atlantis (sometimes known as the “sub-mariner”) decided to privately fund a film starring the team. Namor even started his own production company to produce the film, but the whole thing turned out to be some sort of elaborate scheme in which he had planned to kill them. Thwarted somehow, he went back into the sea and the film was completed by an uncredited Samuel Fuller.