From the Publisher's Website:
Set in the 41st millennium Inquisitor is a narrative wargame that allows you to play the part of a bold hero or cruel villain battling in the dark and forgotten shadows of the galaxy. An Inquisitor is answerable to no one, save the Emperor himself, and their only remit is to protect Mankind at all costs. For an Inquisitor, the end always justifies the means, for they alone can truly begin to comprehend the threats to Mankind's existence. It is this ultimate responsibility, and the differing methods around it, that often sees Inquisitors working against each other. The Inquisitor game centres on this conflict - the battle for the Emperor's soul. Inquisitor is quite unlike any game you may have played previously. While in Inquisitor players do have objectives to achieve and there can be winners and losers, the main aim of the players is to use the rules and miniatures to create characters and a story on the tabletop. You will not find any army lists or points values in this game, because with Inquisitor it is the task of the players to choose the forces and workout what they are trying to achieve in the game. If you attempt to play Inquisitor from just a competitive standpoint, you will lose much of the enjoyment of the game. With Inquisitor it is possible to make all-conquering heroes who cannot be destroyed and warrior bands which are far superior to anything they might meet. But 'winning' is not the point of Inquisitor.