Doors To Darkness provides five scenarios written especially for beginning Keepers and players of Call of Cthulhu. Here you will find horror, mystery, investigation, ghastly monsters, strange magics, and forgotten secrets, as well as plenty of advice about how to run the adventures for best effect. As well as the scenarios, an essay by Kevin Ross details a wide range of hints and tips on running Call of Cthulhu - guidance any Keeper, new or experienced, will find very useful.