Plan was to let Baja and Kyron interrogate the prisoner to as much an extent as possible, then, perhaps propose (if we don't get much out of the prisoner) a duel between the asherake and Tristan to see if we could get it to submit to a superior warrior and spill anything else.
Kiera I don't think would be too keen on executing the poor thing, but I can't see any other reasonable way to deal with it as a player. Perhaps, if we get all the information out of it without the duel, we can let the duel be either for it's freedom or it's death. I don't know.
Suggestions on what a Neutral Good character would do in this place? I don't really advocate the murder of a prisoner.