The thrilling conclusion to Francesca Haig's ground-breaking Fire Sermon trilogy comes to a head in this brilliant finale. Elsewhere exists. Cass, Piper and Zoe must race to prevent the Alphas from destroying what might be the only salvation for the Omegas and an end to the discrimination that comes, for them, with existing. But while they struggle to change the world, Cass must also overcome her grief and loyalty to her twin if she is ever to be free.