Greetings, brethern,
in the mission briefing for [DC], an auto seance conducted by the Adeptus Arbites (or it least demanded by them) is mentioned. Thereby, DarkHeresy seem to official incorportating it into their canon. Any idea with which rules to one could cover something like that? I think about incorporting it into my games from time to time. If my player-psykers ask for it, I can of course say "no, one needs a special training for this you do not have" but I wonder how one could cover this aspect and make it available to players without destroying every murder-mystery-plot right from the start.