Trail of Cthulhu RPGMythos Investigation and Horror in the 1930s You have to keep the doors to the Outside from swinging open no matter what the cost in life or sanity. You have to piece together clues from books bound in human skin, from eviscerated corpses covered in ichor, and from inscriptions carved on walls built before humanity evolved. You have to go wherever the answers are, and do what needs to be done to protect humanity. But do you dare to follow the trail of