Thorian - Ordo Sicarius: One of the Ordos Minoris, the Ordo Sicarius is responsible for investigating and controlling the Officio Assassinorum. By ancient decree, no Imperial Assassin may be deployed without the consent of the High Lords of Terra.This is, of course, immensely impractical and quite often an Inquisitor of the Ordo Sicarius will sanction the Officio Assassinorum under the guise of an edict from Terra. While some believe this to be an abuse of their power, in a galaxy-spanning civilisation, such measures are essential to maintain a level of response required by the sheer scale of the threats to Mankind.Every Assassin is selected from a young age, often from Feral Worlds or the Schola Progenium, and trained for many standard years. The selection process is even more rigorous for Assassins than it is for Space Marines, and perhaps only one in several million candidates will finally fulfil their training and become an Officio Assassinorum operative.It is this perfection of mind and body that is the lure of the Thorian. Not only does the Ordo Sicarius, through the Officio Assassinorum, have access to the historical records of such remarkable individuals, but also is formed in such a way as to allow the identification of possible recruits.A Thorian in the Ordo Sicarius can monitor such activity and, if he or she feels it appropriate, investigate potential subjects for signs of Divine Vessel suitability.There is another, much less manipulative reason for Thorians to operate within the Ordo Sicarius. Thorians are often drawn to powerful individuals, who may well turn out to be daemonically-possessed, Alpha-level psykers or Warp-infected.Such people are dangerous adversaries and an Inquisitor that can draw upon the Officio Assassinorum is much better positioned to deal with these threats. Many a Thorian has ordered the assassination of an important leader having discovered that they are not a Divine Vessel, but in fact something more menacing.The last reason why a Thorian may well end up within the Ordo Sicarius is one of opposites. They believe that to achieve greater understanding of the Divine Vessel, one can study the most repulsive, unholy aberrations within Humanity -- those with the Pariah Gene.Pariahs are individuals that not only have no presence within Warpspace, but actually have a negative impact. They are psychic leeches that absorb Warp energy, not only from psykers but also from normal Humans and other creatures. This ability to draw out psychic energy is central to the Thorian cause, and an understanding of the Pariah Gene may well assist in the creation of a Divine Vessel, or at least further knowledge in the pursuit of the means to bring the Emperor back from the Warp.The Ordo Sicarius is responsible for overseeing the Culexus Temple of the Officio Assassinorum, whose operatives are uniquely Pariahs. Between the Ordo Sicarius and Culexus Temple, a Thorian Inquisitor has a much greater chance of encountering, and perhaps even studying, an Untouchable.The chances of coming across a Pariah, who occur once in several billions amongst Humanity, are virtually non-existent. However, a member of the Ordo Sicarius can gain access to such individuals every few standard years and study them at length.