As a life long KISS fan I truly enjoyed the intimate discussions of their careers, relationships and the band's longevity. Any fan will appreciate the old video footage and photos, some of which I have never seen before! There is a lot to take in covering their 70 years of personal and KISS history.
I think they allotted a good amount of time discussing each and every member including the non-band members of KISS. Unfortunately, Ace and Peter declined to participate over money and control of the story of course. It is very sad that the same old issues cannot be resolved even after so many years apart.
While I loved this documentary and understand why it required 2 parts, I can't say a casual viewer would want to sit through all of that. I think 7 stars is fair but if they were able to squeeze everything into 1 movie I'd give it a 9.