A gothic-tinged tale that pits the three genius Abernathy siblings against their greatest threat yet. 1863. Six years have passed at Ravenfeld Hall. The Abernathy siblings' fortunes continue to improve as George and Douglas's android-building business thrives. But change looms on the horizon. Douglas's engagement to the sweet, charming Clara Marsden threatens to take him from his family, while sister Molly contemplates whether a future with the man she loves means sacrificing her independence and academic pursuits. Then the family face more pressing concerns... One night, George's latest invention escapes the Hall. Four months later, a charismatic inventor by the name of Gearhart appears in London, with an intellect to rival that of the Abernathys'. George senses there's something sinister about the mysterious Mr Gearhart, who's planning to unveil an invention that could change the world. But does he have far grander ambitions? And can George uncover the truth about him in time?