In the woods X Reader

You have just moved to a small town where mysterious disappearances have occured. Few of the bodies have been found, impaled on broken edges of branches with a hexagon and a circle inside burned into the victims arm just below the wrist. Police have searched the woods but some never come out or they go mental and are taken away. No body dares go into the forest for fear they might be killed also.
You have started a highschool there as well....and it might just be the answer to the mystery's.