Hey halo fans! The latest #HALO standalone novel, LEGACY OF ONYX, is on sale now! It makes a great gift for the #HALO gamer in your life too! . . . . Photo cred: author mforbeck #halo #halolegaceyofonyx #haloretribution #halobooks #halogame #gamers #videogamers #gametobook #nowonsale #giftsforgamers #bookgifts #paperback #fiction #gallerybooks