I've changed my mind. The old review is left below the dotted line.
Now I've seen all episodes and it really isn't a great experience.
Poor image quality matched with poor... well, everything nearly.
They're trying so hard to establish Mr Rule as an ice cold and stunningly tough guy, but there he is with his hands in his pockets, a blank look and goes: "...mmm-hmmm" as a standard response.
The Contessa isn't a very convincing character either. She's trying hard to be "upper class" while (for example) answering the phone giggling: "-Contessa di Contini". It (and many, many more occasions of similar sorts) doesn't convince me.
The Tony Anholt character, I feel, is kind of "the least bad" of the lot.
I'd sum it up as: badly directed, badly acted and over played by Nyree Dawn Porter, Robert Vaughn and to a lesser extent by Tony Anholt. Bad image quality: slightly out of focus and bad contrast, too.
I still watch them from time to time. They fit nicely in the "so bad it's good genre" - almost like Hong Kong Kung Fu movies and are good for several laughs where it's unintentially funny. I don't mean to sound as if I enjoy other's failures, cause I don't, but these DVD:s are out there, they won't go away. Anyone can see for them selves what an unconvincing show this is, or was.
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I agree with J. D. Mohney's review totally, not much to add, really. Only that car nuts will have a treat too: I have not seen the entire series, but the episodes I've seen were packed with Jensen Interceptors, Rolls-Royces (several models), Citroën SM's, Citroën DS's and many more... There even was a Maserati Mistral in one episode! ...and a Citroën GS (Jaune Primevère, AC 321) in another one!
For the reasons mentioned by J. D. and the one's I've discovered for myself I find the series well enough entertaining and a joy to watch.
The 25-minutes-format is odd, I don't know of any other series that has such short episodes, but it's also perfect for those occasions when you don't have an hour to spend, only to realize that you've seen 3 episodes in a row! Just because they were only bite size.
Conclusion: The Protectors rank amongst my favourites for the above reasons. If you only ever will buy one series of 60's or 70's british police/agent drama/action you might be better off with The Professionals, I guess. I love Cowley's sharp tongue and way with words in that series! He's no push-over! But if you, like me, really love the series from the 60', 70's and even 80's you might find Special Branch (especially the series from the 70's), The Avengers (the Emma Peel years, in particular), Dempsey and Makepeace interesting too...