The Rise and Fall of D.O.D.O.

The Rise and Fall of D.O.D.O. is a science fiction novel by American writers Neal Stephenson and Nicole Galland, published in 2017. A secret U.S. government agency known as the Department of Diachronic Operations (D.O.D.O.) attempts to change history through the use of magic. Stephenson and Galland had previously written together on The Mongoliad.