It is four hundred years after the nuclear apocalypse. All humans are born as twins: the flawless, superior Alpha at the top of society and the deformed, mutated Omega shunned to the bottom. Cass is an Omega with a rare mutation: the ability to see into the future. Zach, her other half, is the Alpha, and as he rapidly rises in rank he puts Cass in more danger, for if one twin dies the other twin dies too. Francesca Haig has crafted a well-thought out world to deliver The Fire Sermon, an action-packed story of hatred, betrayal, and one girl unknowingly on her way to change the world.