Known in the US as Hercules and the Captive Women, this film was released in the UK as Hercules Conquers Atlantis. This latter title is more accurate both to the original Italian name for the film, and to the plot. There's only one captive woman (though she does get captured three times) and she's pretty ancillary to Herc's plot (the 2nd and 3rd times she is captured, it isn't even Herc who rescues her, but his son, Hylas). Apparently it was renamed in the US to avoid confusion with another Atlantis-based film. One that wikipedia assures me was much worse than this.
I submit that the film should have been retitled Hercules and the Atomic Nazis because
- who doesn't want to see that movie? and
- it's actually an accurate title.
This is the last of the four consecutive Hercules films in my SciFi Classics Boxed Set. It would probably be my favorite just from relief of being through the quartet, but it definitely cemented this position on its own merits. I mean, seriously, it has atomic nazis.