Voodoo Island (1957)

A wealthy industrialist hires the renowned hoax-buster Phillip Knight to prove that an island he plans to develop isn't voodoo cursed. However, arriving on the island, Knight soon realizes that voodoo does exist when he discovers man-eating plants and a tribe of natives with bizarre powers.

Carnivorous plants and zombies supply the chief menace for the principals in Voodoo Island... There's no attempt at explaining how various mysterious things happen in the script, but the thriller gimmicks come off with Reginald LeBorg's direction. Aubrey Schenck-Howard W. Koch production was lensed on Kauai Island, Hawaii, so backgrounds have a helpful freshness as the characters are put through plot perils. Karloff doesn't have to exert himself much to handle his standard character...Elisha Cook and Beverly Tyler hold up the supporting roles. None of the performances is more than stock.