The game is afoot! Londons geniuses are being picked off by a vicious killer & Emma Bannon a sorceress in the service of the Empire must protect the next target Archibald Clare. Unfortunately hes more interested in solving the mystery of the murders than staying alive.. . In a world where illogical magic has turned the Industrial Revolution on its head Bannon & Clare will face dark sorcery cannon fire high treason & the vexing problem of reliably finding hansom cabs in the city.