Deathmoon

The name of this movie is Deathmoon released in 1978-05-30 and it's main theme is A manager is sent to vacation by his doctor due to symptoms of stress. He chooses Hawaii, because that's where his grandfather worked as a missionary. He doesn't know that his grandpa and all male successors are cursed by the Voodoo clan. Every night he transforms into a werewolf and horribly slays young women..