Assassin
The secrets of the Interfector sect have been successfully guarded for fifteen centuries, and known only to select Praetors whom they ritualistically assent to obey. A savage pulse at the Order's heart, Interfectors pursue the aims of their cause with an intensity that eclipses even their most zealous brethren.
The exact source of the Interfector's faith and fervor remains obscure, even to the majority of their Order allies, but is rumoured to involve secret visions of the captive St. Asella.