Following their success recovering King Doon's bones, Banyard and Mingle's services are in high demand. But when a mysterious green-ink letter claims Michael's dead father was murdered, he is compelled to reopen a long-forgotten case… Pursuing clues to a powerful, clandestine order and a missing young woman, the duo confront vengeful enemies and shocking truths – and then there's Willow, a runaway slave, who bursts back into Josiah's life with deadly effect! With gawpers haunting and a murderer closing in, can they survive long enough to see the case through? And if the 'green ink ghost' is revealed, will it be too late for justice to be done?