Rifinn, or Finn as she prefers to be known, is an agent working for the Nine World Protection Agency. Her job involves getting to the bottom of events that are often beyond the understanding of humans. She is also the granddaughter of Odin.
While working on a shocking case where wolf-skin children are being kidnapped and then skinned for the black market, Finn and her partner Augustus track the suspect back to his palatial home where they discover a grisly scene that leaves them devastated.
Worse is to come, when Odin sends his raven, Huginn, to deliver dreadful news that three Valkyries are dead. Finn and Augustus discover that the killer has used the blood of the slain Valkyries to try to enter Asgard, the home of the Gods. But why?
As Finn begins to discover that the threads of fate and the tapestries are starting to unwind she is told that she must track down a warlock called Ask who can help her find those responsible.
Can Finn and Augustus work out who killed the Valkyries before something even more terrible happens? Or has the devastating fate of the Nine Realms already been decided?