The Holy Orders of the Emperor's Inquisition, more commonly known as the Inquisition, are the powerful secret police of the Imperium responsible for guarding the souls of humanity. The purpose of the Inquisition is to identify and destroy the myriad of potential threats to the Imperium and humanity. Such is the Inquisition's power that it answers only to the Emperor.
Founded in the aftermath of the Horus Heresy, the organisation's members are agents known as Inquisitors