Take your Rivers of London games to America! London isn't the only place where magic is returning to the world - On the far side of the Atlantic Ocean, old factions are stirring once again to rub shoulders with brash newcomers to the American "twilight subculture," aka the demi-monde. An exclusive piece of microfiction by Ben Aaronovitch, "Ask, And Ye Shall Receive." The history of magic in America and details of the various groups operating within the United States. Two new case files to introduce players to the American demi-monde: "Wolly Bully" and " A Regular Picture Palace Drama." New spells, creatures, and character creation options. Six ready-to-play American investigators, members of the monster-hunting streaming channel, The Cryptid Kickers. In Liberty's Shadow: A Guide to Case Files in the USA is a sourcebook for Rivers of London: The Roleplaying Game, based on the Rivers of London series by Ben Aaronovitch.