Unhinged is a fast-paced novella set in the world of Wool. The Silo has become a world of stark haves and have-nots. Food shortages and power outages are becoming more commonplace, fueling the rise of a rebel from the down deep, mysteriously known as 'Mole Rat', who threatens to unhinge the Order of the Silo. Martin is an ambitious member of an elite security group called the Garda charged with capturing Mole Rat. All it requires is a mission to the down deep, something Martin and his men have trained for repeatedly. But there is more to the down deep than meets the eye.