Lost in Space (1965–1968)
2 user 1 critic

Deadliest of the Species 

The robot falls in 'love' with an evil female robot sought by two aliens.



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Episode complete credited cast:
Will Robinson (as Billy Mumy)
Ron Gans ...
Alien Leader (as Ronald Gans)
Mechanical Man I
Ralph Lee ...
Mechanical Man II


The robot falls in 'love' with an evil female robot sought by two aliens.

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Plot Keywords:

talking backwards | See All (1) »




Release Date:

22 November 1967 (USA)  »

Company Credits

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Technical Specs


Sound Mix:

(RCA Sound Recording)


Aspect Ratio:

1.33 : 1
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Did You Know?


Contrary to popular belief, this is the only time that the quote, "Danger, Will Robinson! Danger!" is used, as the space capsule Alpha 784 is crashing to the surface. See more »


The Robot deactivates the force field while Dr. Smith is sleeping. The Robot begins to exit the ship. The next shot is Smith sleeping next to an activated force field. See more »


The Robot: Danger, Will Robinson! Danger!
See more »


Featured in Pioneers of Television: Science Fiction (2011) See more »

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User Reviews

Hilarious Robot In Love Episode
9 September 2008 | by (United States) – See all my reviews

This has always been a favorite episode of mine since robots shouldn't fall in love, and of course the Robinson Robot B-9 isn't just any robot, so he does. The evil female robot uses all sorts of underhanded manipulations to get what she wants out of B-9 and, like any dumb sap who's infatuated, the love-struck robot carries out all her commands. He knows she's bad, but he can't help but get sucked into her diabolical plans. We don't have "vamps" the way they used to in showbiz, the concept is blatantly sexist and unflattering to women. Sure, we have evil chicks in TV shows nowadays, but some of the sexist stuff that goes on in this episode is seriously dated and fun to watch -- it wouldn't fly today. Letters would be pouring in from womens' groups complaining about the tone. Ah well, at least we can enjoy watching henpecked B-9 travel down a path many men have found themselves on when dealing with unscrupulous and self-serving females. I can agree with another contributor that this is episode is not serious stuff at all, but disagree that it's not "good" -- it is a laugh riot and lots of campy fun (most episodes where the robot gets to expand his role usually are). Yes, that's Lyle Waggoner from "The Carol Burnett Show" as one of the silver skinned aliens. The contributor also misinforms by saying The Robinsons fall in love with the evil female robot; this is not the case at all; Robot B-9 keeps his shameless lady-love a secret from his space family and only sneaks off to visit her on the down-low. It's a classic scenario that could have come out of a film noir, with the "bad girl" ultimately ruining the family man who is haplessly in love with her.

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