Blackheath is a desirable area - a good place for flying kites and family picnics. But at its centre is a dark pool of water which holds no life. And something centuries old, terrifyingly evil, is buried in its filthy residue. One summer's day, disturbed schoolboy Sebastian Lee calls from its depths the ancient evil, welcoming it into his body. And soon a chain of inexplicable carnage is unleashed on the area. Only Cherie Simpson knows the truth, revealed to her in a horrifying dream. But she cannot believe that her nightmare is about to come true...