“Revelations of a Secret Brotherhood” is the second part of the twelve-part “Obsidian Fire” serial, a superhero style adventure that is heavily inspired (admittedly on the verge of plagiarism at times) by the Arthurian legend of the Sword in the Stone.The saga is told almost entirely from the point of view of a reluctant sidekick, who must watch as somebody else gets thrust into the role of the hero. Together, the two join forces with the members of an ancient Brotherhood to battle a threat the likes of which the world hasn’t seen since medieval times.The second episode picks up where the first one left off, with Dirk trying to convince the reluctant head of the Obsidian Brotherhood that he is worthy of the Flaming Sword that he initially rejected. But, the Grand Master isn’t the only one trying to keep the Sword away from the new Flaming Knight. Forces nobody quite understands are determined to take the mystical blade away from Dirk before he even figures out how to use it, and they just might succeed.For his part, Mark is feeling a little overwhelmed and learning the full meaning of the term “be careful what you wish for”. Unable to go back to the life they’d left behind before going to Scotland to seek out the Sword, Mark and Dirk have no choice but to rely on the mysterious ancient Brotherhood that, even as it reveals some of its secrets, is no easier to trust, let alone understand.