When she catches Edmund Wyatt following her through the streets of London, Abbie Sharp learns that every British monarch for hundreds of years has known about and financially supported: the Conclave.
Furious that the monarchy would cooperate with such a nefarious group, Abbie refuses Wyatt's request for help in catching the person who is blackmailing Queen Victoria with this secret information. But a far greater threat emerges when the Ripper, Max, returns and brings a string of new murders with him. Abbie must choose whether to help the Queen she now despises or stop Max from succeeding at his most diabolical plan yet: the creation of a whole new Conclave aimed at usurping the British throne.