They call her the Leader. Their saviour and only hope. Only Ruby knows what she really is — a monster, capable of destroying them all. Ruby never asked for the abilities that almost cost fier life. Now she must call upon them to bring down a corrupt government in a world where children have been eliminated. When she is entrusted with an explosive secret, she embarks on her deadliest journey yet : leaving the Children's League to track down Liam Stewart, the boy who carries the truth about the disease that threw the world into chaos.