A 2,000-year-old conspiracy is about to unravel in a tense mystery thriller that shifts between ancient Rome and contemporary London. Librarian and historical researcher India Sommers is used to questions about antique curiosities. So when a stranger asks for her opinion about an ancient but obviously fake coin, she thinks little of it. Until the man is murdered outside her library. Suddenly India finds herself involved in a perplexing investigation. The man's coin is revealed to be an artefact linked to the ancient Roman cult of the Vestal Virgins, and it may help reveal the whereabouts of a missing young girl. Now India, accompanied by special forces investigator Brandon Walker, must race against time to resolve the mystery and discover the intent of a shadowy organization before innocent lives are lost.