He felt something touch his hand. Which is when he looked down.
For the scouts of Troop 52, three days of camping, hiking and survival lessons on Falstaff Island is as close as they'll get to a proper holiday.
Which was when he saw it.
But when an emaciated figure stumbles into their camp asking for food, the trip takes a horrifying turn. The man is not just hungry, he's sick. Sick in a way they have never seen before.
Which was when he screamed.
Cut off from the mainland, the troop face a terror far worse than anything they could have made up around a campfire. To survive they will have to fight their fears, the elements ... and eventually each other.