Underrated gem -- and the film Joan Crawford's BERSERK should have been
CIRCUS OF HORRORS is a great, trashy, quite lurid (for its time) B-movie horror fest, and a notch above the similar BERSERK from a few years later.
All BERSERK had was Joan Crawford (which is a lot) but was otherwise a watered-down version of CIRCUS OF HORRORS.
In my fantasies, the two movies are mashed together: Diffring, Crawford, grisly murders, plastic surgery gone wrong, Halloween color schemes --- what's not to love??
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LBJ's mistress on JFK:
https://www.youtube.com/watch?v=WcXeutDmuRA