When an elderly priest passes away, one of his colleague discovers a mysterious green liquid hidden in a cylinder deep beneath a long-abandoned church. Rather misguidedly, as it turns out, he invites a group of enthusiastic students to come and investigate it's properties. Big mistake! It was hidden deep in the bowels of this crypt for a very good reason, and once they release it they discover that the Satanic horror they face might just be the tip of the iceberg! Donald Pleasence is strong here as the priest who realises, all too late in the day, that they are facing a terror that could jeopar... read the rest.