"Thrilling, gripping, action-packed." - The Guardian
In the fourth book of this high-octane series, the Inventory's
final secrets are revealed! Having learned a troubling truth about
himself in the Black Zone of the Inventory, Dev is called back
into action to defend the world's greatest store of futuristic
tech, and he'll need all the help he can get from his friends. Someone
has stolen Winter Storm, a swarm of powerful biobots, and is
using them to infect and control people! Who can be trusted now?