To be honest, I vaguely remember this one scene from the movie (I was like 5 when I saw it I think).

The scene depicts a teenager spying on this stepmom/dad's girlfriend along with a girl (possibly girlfriend) because he has a hunch something weird is up with her and he sees her in the backyard transformed into her alien form.

The movie probably belongs to the horror-scifi genre since the alien form was scary (at least to the 5 year old me).

The movie is possibly from the late 80s/early 90s.


2 Answers 2


Stepmonster (1993).

From IMDb:

Todd Dougherty has an imagination driven by comic book. So when he accuses his soon-to-be stepmother of being a monster, no one believes him. When neighbors start turning up dead, it becomes a race against time for Todd to stop this hideous, carnivorous creature from marrying his dad and ruining his.

The stepmom can't tolerate the violin songs life.

  • This is it! Thank you!!
    – AndyFaizan
    Jun 3, 2019 at 8:34

Depending on how well you remember it, this might be My Stepmother is an Alien from 1988. The main teenage character in that movie is a girl (Alyson Hannigan), but she hangs out with a boy (Seth Green). Her father (Dan Aykryod) is a scientist, who ends up meeting an alien (Kim Basinger).

This review from SyFy wire hits most of the plot points, although in a very negative tone.

  • 1
    Then again, I don't think the alien in that movie had a secondary form. And secret aliens was a fairly common 80's movie theme, so I could be way off.
    – Mughi
    May 31, 2019 at 11:07
  • Yes I don't think its this one. I already looked it up. There was a secondary form, which was scary (at least supposed to be). Don't think it was a comedy.
    – AndyFaizan
    May 31, 2019 at 11:10
  • 1
    I'd recommend adding that (and any others that you have already eliminated) to your question. Also, the 'not a comedy' point
    – Mughi
    May 31, 2019 at 11:19

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