Heartfire: A Brimstone War Novel - The Brimstone War Novels, #3

With the gates to Hell open, chaos and fury demons are running rampant on the surface. Humans and demons alike feel the change in the energy and are being swept up in the rush of power. Las Vegas is starting to crumble and crack as the minor demons run wild and demons fight angels and angels battle angels, all with Billie and Lucian in the center. But Lucian is careful to keep his distance, feeling and fearing the grown power of his former love.
Billie fights and plans, trying desperately to end the war before it spills beyond the desert of her home. With the power of the Underworld now answering to them, Billie and her sisters must find a way to end the war of the three worlds without destroying the surface world or their own souls in the battle. Billie, desperate to regain the balance between the three worlds is faced with a decision that may change her life forever.
Caught between worlds, loves, and her own desires, Billie may lose everything in her effort to save the world.