Sadly you have to sign up for the whole collection of series. Colour and a memorable theme tune appeared in later series. McGoohan is brilliant in the lead role and would surely have been a great Bond? Typical of the period the scripts are smart condensed and straight to the point. The formula? John Drake has a punch up and always seems to have a pretty female involved. The plots are good though and are usually based abroad somewhere exotic, even if it is actually Wales or a back drop shot of Istanbul etc.
Definitely worth a hire to enjoy a season of a very good 1960s action/thriller stuff. Enjoy.