Lord Winthrop, a famous Egyptologist, has returned from the Middle East with an unusual mummy and intends to unveil it a party for the cream of London society; Veronica is on the trail of a presumed serial killer; and, Maurice gets an express order from the Queen to bring agent Caspian in. Hovering over all of this is the long shadow of Newbury's predecessor as Queen's expert agent on the occult, one Dr. Knox who seemingly loyal and dedicated to the Empire, had a gruesome agenda--to achieve immortality.