User summary: Frigor Mortis is an Italian-language horror setting for the light-weight F.R.E.S.C.O. role-playing game. Frigor Mortis presents several types of undead, both corporeal and incorporeal, and gives game statistics for most of them. A small section also details rituals and incantations that could be used to summon the undead; these could be selected as "special talents" by characters. The setting is minimal.