In the third book in the Inis Mara series for young teens, Inis Mara’s worst enemies, an Santóir and Smugairle Rónán, are back with a plan to get richer than they ever imagined. But the damage they cause will put the people of Inis Mara – and the island itself – in huge danger. The people of Inis Mara face their greatest threat yet – but since when has their young hero Éabha ever avoided a challenge?