Silly but enjoyable 60s spy film with Edwards the agent out to stop criminal mastermind Hammerhead (Vaughan) from stealing NATO defense secrets.
Fun stuff, and the Portugese locations are nice, but neither Edwards or Vaughan's characters are fleshed out (a shame, as Vaughan would have made a great Bond villain), but Geeson is fun as Edwards' goofy sidekick, and Beverly Adams makes quite an impression. The underrated Bates makes the most of his multiple roles as well.
Thanks to Gerald Lovell for supplying some names I should have known!