This set of three books includes the beginnings of Maze Investigations and their first case, in Three Times Removed. Having established themselves as a reputable international organisation, they move on to another two cases, one intimately connected with one of the investigators, the other a strange client who may not be what he seems, in Line of Descent. The third book covers the story of a legacy of three rings, the truth of their ownership and the danger in which investigating these heirlooms ultimately places them, in The Julia Legacy.