He Shut Them Again

David had never been a fan of hiking, but at the insistence of his best friend's sister, he had agreed to go hiking on Dartmoor on the last Saturday in October. At the time it didn't sound like a bad idea, at least until they got caught in a thunderstorm. But on Dartmoor, you could be in for a lot worse in the dark.

When things start to get worse, David will try his best to save his three friends and himself from the evil creatures that lurk in the darkness.

What kind of creatures are in the wilderness? Who is Raven Dana? And how come none of them noticed the house on the moor any faster?