The world around the Revolutionaries is crumbling. And Caitlin’s biggest test is yet to come…

The Governor is defeated, the tides appearing to turn.

But as Caitlin continues her search for the Unknown, guided only by the crudely drawn map the Governor left behind, she finds herself led vastly off-track.

A haunting encounter in the woods. A broken city of rebels. A terrible secret hidden in the sewers beneath the earth.

The gates to Caitlin’s world are opened, and the Mad want in.