Is athinsint é An Fia sa Choill ar scéal grá Fhinn Mhic Cumhaill agus a bhean mhistéireach, Sadhbh, a tiontaíodh ina fia nuair a dhiúltaigh sí seanfhear a phósadh. Seo é an tríú leabhar sa tsraith mhiotaseolaíochta – tagann sé sna sála ar An Féileacán agus an Rí agus Cluasa Capaill ar an Rí.
An Fia sa Choill tells the love story of Fionn Mac Cumhaill and his mysterious wife, Sadhbh, who was transformed into a deer for refusing to marry against her will. Readers young and old will be captivated by this age-old story, retold masterfully by Sadhbh Devlin and brought to life in the magical illustrations of Anastasia Melnykova.