A pathologist investigates a series of gruesome deaths on a small island. He discovers that an experiment carried out by a group of doctors trying to find a cure for cancer has created a race of mutant creatures that suck the bones from the bodies of their human prey. Horror, starring Peter Cushing and Edward Judd.

A small island community is overrun with creeping, blobbish, tentacled monsters which liquefy and digest the bones from living creatures. The community struggles to fight back.