Shadow City (Tales of the Shadow City Book 1)

Los Angeles is an apocalyptic wasteland. The few survivors of a horrific catastrophe live under the constant threat of radiation, mutated creatures, and worse... lurking in the shadows.
The nuclear disaster has shifted realities as we knew them and brought something into our world which threatens to exterminate the human race. Something so vicious that every living being is horrified of it. Something that feeds on suffering and violence.
But humans aren’t alone in their struggle for survival. Unexpected allies emerge from the shadows, and in the final stand, a nameless stranger will decide humanities fate.