Anathema

Neither Elodie nor Aisling had any idea of what lies on the other side of the grave, but after the horrific death of the two young women, they find out suddenly. Unfortunately, their ends hold a greater toll than just the loss of their own lives but the lives of those they left behind.
In an empty and grey world, helping the ones they loved becomes a life-or-death priority and the powers that be make it no easier in saving their living counterparts. With Hell's army swarming Earth and Heaven steadfast in the definition of faith, who can they turn to? When a bitter Soldier of Hell turns out to be an unlikely comrade for one woman and a demon's unwanted attention falls on the next, they each set out to find just how close they can get to the fire before they get burned.