It seemed that Quinn Martin was starting to lose his golden touch.
In 1975, Martin had The Streets of San Francisco nestled comfortably on ABC's Thursday schedule. Over on CBS, you could find Barnaby Jones & Cannon. However, the cookie cutter format was starting to wear thin.
Martin had tried to change things up with period pieces like Banyon at NBC and The Manhunter for CBS, but neither got past their first seasons. Then, Martin decided he wanted a piece of the Hawaiian action.
Caribe, as memory serves, didn't air anywhere near the original Hawaii Five-O, but it didn't last too long, either. Stacy Keach landed his first lead role, but most folks remember him more for his later work as Mike Hammer in the 80's. In a rare twist, his co-stars, Carl Franklin & Robert Mandan, were introduced after the guest stars, as you'll see in the intro below.
Franklin would return the next season with another short-lived series, The Fantastic Journey. Mandan, on the other hand, would fare much better with the soap opera spoof, Soap, reinventing himself as a comic actor.