One day, on a visit to central London with her family, a light in the world is suddenly extinguished, causing panic and chaos as people are plunged into pitch black. A pagan god of light, Lugh, has been released from his millennium-old-prison by a shadowy villain and, out for revenge on humans, has brought darkness down on the world. But Ella is the hero the world needs: she is used to living her life in darkness every day, and is able to keep calm and work out a plan to defeat Lugh and return light to the world.

• an edge-of-your-seat, wonderfully twisty adventure mystery for fans of Percy Jackson and Skandar.
• an empowering, empathetic story showing young people that disabilities do not have to hold them back.