THE SHE-BEAST (1966)

  I've always though of this one as the worst Barbara Steele movie. That's probably due to the fact that you really don't get much sexy Steele action in it. You don't get really get a ton of Steele at all though since she becomes the titular monster for a good portion of the runtime. Speaking of which, the monster here is one of the grossest and most maniacal representations of a witch put on film so that's something worthwhile.  The overall tone of the film seems a bit off since half of it seems to be a comedy(including bumbling cops involved in Keystone Cops-like chases) whenever someone is not being brutally murdered.  So if you dig schizophrenic Eurotrash monster movies from the 60s it's worth a look.  

 Also honorable mention has to go out to Mel Welles(Mr. Mushnick from LITTLE SHOP OF HORRORS) for his portrayal of a very sleazy Innkeeper(he even tries to rape his own niece in one scene!).

                                              Known in Italy as THE LAKE OF SATAN:

Played on a double-bill with this other Italian horror from a year earlier:

  and played in England(under a snazzy re-titling!) with this Italian/French spy movie: