Blood of the Saints — Cheri Scotch

What would the Devil be willing to do to reclaim lost love--Ex-cop Calli Hayward has been resurrected from the dead by the Lazarus Knights to defend mankind. When a creature like no other devises a plan to destroy humanity and repopulate the world with its own league, help comes from an unimaginable source--the disgraced Morning Star, Lucifer. Betrayed by the one he loved and trusted, Lucifer must now work with the Knights to stop the impending destruction. And Lucifer knows a secret about Calli that makes her the only Knight capable of preventing the devastation. If she succeeds, humanity will be saved. If she fails, she may be sealed forever in the void between earth and hell. With Lucifer.