The chase is on! After the destruction of the Diamond Jubilee, Agents Eliza D Braun and Wellington Books are in hot pursuit of Dr Henry Jekyll. While he continues his experiments on the aristocracy of Europe, he leaves a trail of chaos and despair in his wake. However when Eliza and Wellington run him to ground in India, they are forced to come face to face with ghosts from the past, and the realities of empire.
Meanwhile Brandon Hill and Bruce Campbell travel deep into Russia hunting down ingredients to save Queen Victoria's life. Amid the cold they uncover a new threat from the revitalized House of Usher.
All the agents of the Ministry of Peculiar Occurrences will find their allegiances in question, and their mettle tested as a new dastardly era of international intrigue dawns.