Jessica Raney 
These Violent Delights [EPUB ebook] 

Emily Wells has a gift.

Death.

It comes in handy in a post-apocalyptic world filled with murderous plague-infected monsters, the undead, and people that defy description. She’s at the top of her game, dealing death in a lucrative spectacle of violence that placates and entertains the masses. When a new player enters the game with a shocking revelation that threatens the carefully maintained status quo, Emily is forced to make a choice. The decision she makes could change the world forever and be deadly for herself and everyone she loves.