Writer Cash Markman had been trying to start a series called "The Sexual Limits" for a couple years - to be an X-rated version of TV's "The Outer Limits." His first script to use this title was directed by Scotty Fox and released with a different name - "Eternity." So Markman wrote a new "Sexual Limits" script with a different storyline. This time Jim Enright directed it for a rival company. A strange coincidence had it also released with the title "Eternity." So Markman wrote a third "Sexual Limits" script, again for Fox, who also saw the potential of a series. But the distributor that released the movie changed the title to "In Deep With the Devil." Director Herschel Savage then made a remake of that movie, using an early draft of the same script Fox just shot. And finally it came out with the title director and writer wanted, creating the possibility for sequels. Ironically, after all this effort, poor sales resulted in no further journeys into the "The Sexual Limits."