You can also learn spells to summon zombies by finding the related spell tomes at the Ritual Site or as random loot. Indeed, zombie hordes will now randomly appear as world interactions all across Skyrim. However, once you get there you will discover that you are too late, as the site has been overrun with zombies. After reading the letter, you will be directed to a Ritual Site north of Southfringe Sanctum (map) to stop a group of Necromancers from using ancient magic to conjure zombies. This Creation adds the quest The Rising Dead, which is automatically added to your journal upon installation, along with an anonymous letter. (Creations appear at night at certain locations in the world and through a quest.) Overview Official Summary In Skyrim, when the sun falls, the dead rise! Beat back the zombie hordes, and retrieve valuable Mort Flesh.