This week’s free book is Black Onyx (A Superhero Thriller), by Victor Methos. Evidently this involves a relic from a lost civilization, which appears to be a suit of super-powered armor, but I haven’t yet gotten to the point where the armor has actually been found, so I’m sort of guessing. But given that the book description calls it the “Black Onyx” suit, reveals that there are more than one of it lying around under the Antarctic ice, and gives away quite a bit of the villain’s activities in his attempt to get one of the suits for himself, it seems like a pretty good guess.