Niolani (Francine York), a spikey-headed dominatrix representing a world of female warriors forces the Robinson men to prepare the planet for colonisation by her distaff compatriots and their male servants. The 'role-reversal, women on top' premise is a throwback to the straw-feminist space operas of the 1950s, such as 'Queen of Outer Space' (1958), and prefigures the campy British sci-fi TV show 'Star Maidens' (1976). In her shiny leather-look outfit, cape, and off-beat headpiece, the smug and supercilious Niolani resembles Nyah, the 'Devil Girl from Mars' (1954), another bossy extra-terrestrial woman who enjoys lording it (ladying it?) over men. Most of Niolani's lines are cliches and York's delivery is subtilty-free and stagy, but the episode is reasonably entertaining (and pleasingly doesn't end with the female autocrat realising that she just can't live without male company). As Dr. Smith, Jonathon Harris gets to wear silly outfits and, in the end, his character is a bit less self-centered than usual (but comparisons to 'Bridge on the River Kwai' (1958) are a bit of a stretch). Fun in a silly way and an amusing example of what passed for portraying 'feminism' on network TV in the 1960s (although Maureen, Judy, and Penny never threaten to burn their bras).