A twisted tale of murder, magic and salvation. Heather Keynes' teenage son died in a tragic car accident. Or so she thinks. However, deep in the countryside, an ancient evil has awoken … intent on hunting local residents. No-one is safe. When Heather takes a closer look at a series of coincidental deaths, she is drawn reluctantly into the company of an odd group of elderly Guardians. Who are they, and what is their connection to the Great Oak? Why...