From the back of the book:
Darkness Is Always With Us
We have shared the world with monsters for millennia.In the time of Alexander the God-King, mages fought their secret wars. In Elizabeth’s London, vampires built their own empire brick by bloody brick. Before the founding of America, hunters fought enemies within and without. And in the Cold War, as the clock ticked towards Armageddon, we could have been damned by fallen angels.
Secrets Revealed
Chronicles of Darkness: Dark Eras reveals the world throughout its long and storied past. Through sixteen eras, you’ll learn the secret history of the world, from the flame-lit tales of the Neolithic to the drug-fueled rebellion of the 1970s. Delve into the past, and learn that the Chronicles of Darkness began long before the modern nights.
Dark Eras includes historical settings for Chronicles of Darkness game lines:
Vampire: the Requiem
Werewolf: the Forsaken
Mage: the Awakening
Promethean: the Created
Changeling: the Lost
Hunter: the Vigil
Geist: the Sin-Eaters
Mummy: the Curse
Demon: the Descent