This movie had some plusses going for it, primarily the cast.  A lot of money was spent on the production design and special effects, but the film suffers from a misconceived premise.  First of all, it's dealing with a witty, effervescent spy romp -- an iconographical series of the 60's -- but it tries to turn it into a darker, insupportable James Bondian (same production designer).  "Dark" and the Avengers don't really mix.  The whole production is dark, lots of crashing special effects, derring do, conflict between "Father" and "Mother" which is never explained.  The dialogue is hard to understand and captioning is not provided on the streaming version.  A problem.  Other elements in the script are also confusing--the Emma Peel imposter, rationale, etc.  The direction is just leaden and that's fatal to this type of film.