This is a film I saw as a child at a local matinée. It was supposed to be like a "James Bond" movie so I eagerly went expecting an action packed two hours. What I ended up seeing (even as a child I realized it was a really bad movie) was a film that was entirely derivative of other spy films.
Troy Donahue, like so many pretty boys of the 60's, did not have the acting ability to pull off the kind of character the film was trying to create. Connery was Bond; Caine was Harry Palmer, and James Coburn was Derek Flint. They defined the roles. They were interesting and magnetic. The hero in this film is not even a faint echo of those great spy film characters.
The film was cheaply made with scuba scenes reminiscent of Thunderball. However, in one of the underwater fight scenes, the injured diver has his hand in his wet suit clearly pumping a plastic bottle full of stage blood that is then permeating the water. I watched thinking surely a mistake like this couldn't slip through any professional film editor--but it did.
If you can even find this film, don't waste your time--unless bad movies as humor is your gig. Oh, and I almost forgot. The theme song is catchy but and performed by Smokey Robinson, but with ridiculous lyrics: "Come spy with me, live a life of danger and of mystery! etc etc etc" Regardless, the film is truly bad!
