Putting the ‘Box’ in Boxing Day Sale

For today — December 26, 2015 — only, $20 gets you a box of 3 mystery Invisible titles, delivered to you just in time to help you with that new year’s resolution to read more books. Spend your money here!*   *This was a one-day-only sale, so the link is now disabled. But we’ll be running this as an annual thing, so check back on Dec 26, 2016 for another chance to order an Invisible mystery box.