Ordinary people are confronted by the terrifying beings and forces of the Cthulhu Mythos. Players portray investigators of things unknown and unspeakable. Except for dice, everything needed for play is included in this book. Call of Cthulhu includes extensive background about H. P. Lovecraft, one-stop investigator creation, dozens of skills, three eras of play (1890s, 1920s, and present-day), over 200 Mythos creatures and spells, ready-to-play investigators, expanded weapons data from all three eras, four complete scenarios, and essays on the Necronomicon, Forensic Pathology, and the Dreamlands.