Dressed in garish Halloween costumes, two teenage girls run through a patch of dense woodland towards the outskirts of town. But before they can reach the safety of the streets beyond, they make a shocking discovery. Following a piece of old rope, the girls find a large mound of freshly laid earth, undisturbed in the darkness of the trees. Clawing at the ground beneath them, they make contact with something solid. When they realise what they've discovered, the silence is broken by their piercing screams as they stare down at the shallow grave. Without looking back, they run as fast as they can, failing to spot the person nearby watching their every move... And when another grave is found just days later, it's clear a serial killer is praying on the small town. But who is the killer watching now? And when will another grave be filled?