This system-free document provides a detailed overview of ORUS, the Office for Research of Unusual Science, from its origins in the ancient world, through its various incarnations over the ages, and up to its ultimate realization in the current era as a covert government agency. 

Nominally a research organization and sub-department of the U.S. governmen's Intelligence Advanced Research Projects Activity, ORUS operates as a black ops agency responsible for investigating weird or unusual subjects of interest to the United States and allied intelligence agencies. Its goal is to assess the potential value of such information so that it can control or acquire it for its own purposes. 

The Office for Research of Unusual Science (ORUS) is the most recent incarnation of an ancient occult society with an agenda of its own. It is but one of a bewildering network of related covert organizations, each acting to advance a secret agenda known only to their shadowy leaders.