Isla and Tarek explore Glasgow of the Otherworld, while the Red Caps visit the London of ours. Back in The Necropolis, Amaka knocks on a familiar door and makes an offer that might just give Isla what she was looking for in the first place. All of this, and the world wakes up to its newest leader as the bloody story of Thorn and Belatucadros rumbles towards its inevitably costly conclusion.