Frankenstein Island

I've been struggling hard to find a film as bad as "Mesa of Lost Women" (1953) and I think I might just have found it. A bunch of hot air balloonists (says it all, already, really) land on a remote island to find it already populated by beautiful, scantily-clad Amazon women and rather clunky looking mutants. Upon closer inspection they discover that the whole island is one vast experiment being ru...