Usually the villain was known and that they were behind something, but it was up to Bond to infiltrate the villains organization to find out what it was and prove they were behind it. The villain would catch on that Bond was a spy and the end would have a climactic battle sequence. the first Austin Powers movie does a pretty good job of portraying the earlier Bond flicks, yet with a bit more intentional humor, but it was of course a satire on Bond.
If you haven't watched any or much of the earlier Bond films, some of my personal favorites are You Only Live Twice, The Man with the Golden Gun, Live and Let Die, On Her Majesty's Secret Service, For Your Eyes Only, The Spy Who Loved Me, and Moonraker.
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