Jon and Mack's Terrifying Tree Troubles

It’s like a bad game of Telephone. Grant locates a murdered teen in McMinnville. He calls Jon. Jon locates the girl’s ghost. He calls Mack. Mack talks to the ghost who leads them to more ghosts. Who lead them to even more ghosts. And why are all the murder victims buried under trees? The boys are ready for this game to end, please. (Donovan especially.)