The Ravenglass Throne

A king is murdered before his people and his assassin leaves the sigil of a noble house. His three daughters inherit a divided court, a throne with no clear successor, and a kingdom beginning to fracture. For centuries Ostreich has been held together by ravenglass, wyverns, and the ancient bond between rider and mount, but now that bond is failing. Irmin is a warrior who trusts her blade, her wyvern, and almost no one else. Elana can outmanoeuvre any noble, but her failing sight leaves her exposed to dangers she cannot see. Adelinde has discovered something corrupting the wyvern bonds that may destroy the royal family before it consumes the realm. With rebellion rising and conspirators closing around the throne, their enemies want the sisters suspicious, divided, and fighting one another.