Fionn and Aoife learn about their ancestors, who sent the fairies and what they're after - or who they're after. Since Cael's condition is getting worse by the minute, a plan is urgently needed. At least, Orla left her kids a clue on how to break the curse that's been haunting their family for generations. But to break the curse means to beat a god. And how do you fight an almighty being with an army of fairies, selkies and púcas when your time is limited? "Scatheless" is packed with mystery, horror and Gaelic mythology.