In this action-packed sequel to Iron Fist, the nefarious Shadow Helix organization has possession of Newton's Arrow, a super-advanced gravity weapon stolen from the Inventory. It's up to Dev and his friends to get it back, and they follow its trail all over the world. But as they get close, they uncover disturbing truths about the past. The second book in the action-packed Inventory series. Hidden under a small suburban town, the Inventory is a collection of the most incredible technology the world is NOT ready for. In this sequel to Iron Fist, much of the Inventory's technology has fallen into the wrong hands - including Newton's Arrow, a powerful weapon that can manipulate gravity. It's up to Dev and his friends to get it back, and they followthe weapon's trail around the world. Along the way they learn the terrible truth about Newton's Arrow's capabilities ... as well as disturbing details about Dev's origins. THE INVENTORY SERIES OF BOOKS Iron Fist (book 1) Gravity (book 2) Black Knight (book 3) Winter Storm (book 4)