Chaosium Stock #2387 (For Call of Cthulhu Edition 5.6) Call of Cthulhu keepers of forbidden lore can now keep their secrets in style. This three panel Keeper's Screen is jam-packed with vital GM information presented in an easy to use at a glance format. The player's side of the screen features awesome Philippe Caza artwork worthy of its own sanity check. This product includes a new introductory scenario perfect for beginning investigators and keepers alike, as well as three 4-page game aids (weapons table with an alien weapons section, a new 4-page summary of rule book spells, and some character sheet masters to jump-start your new Call of Cthulhu game).