Boris Karloff stars in this ghoulish double feature. In Island Monster, a beautiful and superficially idyllic island is not what it appears to be, as its denizens soon discover. It seems evil lurks even in the most astounding places. In Chamber of Fear, the menace is a rock, a seemingly lifeless object that actually has the power to destroy lives or end them forever. Where did it come from, and why is it so evil? No one knows for sure.