Limbo of Witches -- Ghosts of Windigo — Michael Ryan

Somewhere between Heaven and Hell there is a lonely place...In the near future when things are not as they once were comes the fourth tale of the Witches of Isle Royale.To rewrite the witches' genetic code and set aside their programmed dissolution at 30 years old, Kim Murayama must cross the threshold into an uncharted land where the dead live and the living may never have been. It's a netherworld beyond dreams where death is very real and his only ally is the ghost of a would-be lover.