Joan Collins originally sought for one of female leads.
A 1967 re-release attempted to appeal to the new generation by playing up the sex in the advertisements. The '67 poster featured the drawing of a topless woman underneath a bare-chested man on a bed, as well as a topless (but chaste) photo of co-star Fay Spain that was definitely not in the picture itself! For this re-release, Tina Louise was given top-billing and Michael Landon went from tenth billing in 1958 to second billing this time.
Film debut of Tina Louise.