1794. Eleanor, once a lowly English maid, is now a member of the League of the Scarlet Pimpernel and a promising conjuror. With a vampire plot thwarted in Paris, the League's next daring rescue is of the Pimpernel's beloved wife, Lady Marguerite, imprisoned in her London townhouse on unjust charges of treason and espionage. But Lady Marguerite’s captivity is only the first threat from the League's vampiric enemy. With the King known to be ill, possibly mad, England is not as it should be. Vampires conspire to take control over the whole country whilst challenging Eleanor and the League at every turn. But then, using her growing magical powers, Eleanor uncovers a devastating, centuries-old secret. It is one so steeped in blood, that it will change not only England, but the entire vampire world, forever . . .