This was going to be the third DEREK FLINT movie
Jeff Bond (a film historian, he did the liner notes for the James Bond soundtrack re-releases) was interviewing MST3K's Joel & Frank in GEEK magazine, and he mentioned that he was looking over the archive material for FANTASTIC VOYAGE to do a dvd commentary, and saw that it was planned as a Flint movie. Makes sense -- in the second movie, IN LIKE FLINT, he went to outer space, so next would be inner space. And that explains why the first 30 minutes is a spy movie. Somewhere else I read that the title was 'F' IS FOR FLINT. I guess the 60's spy craze was ending, or maybe James Coburn wanted to move on to other roles. The Flint movies weren't great, but the chemistry between Coburn and Lee J. Cobb made them worth watching, and the Jerry Goldsmith surf/spy music was fun.
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