The Philosopher and the Druids: A Journey Among the Ancient Celts

Rome and Jerusalem: The Clash of Ancient Civilizations

Alexander the Great

About Time: Surviving Ireland's Death Row

Julius Caesar

Women and the Irish Revolution

Julian: Rome's Last Pagan Emperor

How the Irish Saved Civilization

Hannibal: Rome's Greatest Enemy

Say Nothing: A True Story of Murder and Memory in Northern Ireland

Oh My Gods: A Modern Retelling of Greek and Roman Myths

Escape from Baghdad: First Time Was For the Money, This Time It's Personal

Celtic Spirituality: An Introduction to the Sacred Wisdom of the Celts

A Belfast Child: My true story of life and death in the Troubles

War, Women, and Druids: Eyewitness Reports and Early Accounts of the Ancient Celts

Charlie One: The True Story of an Irishman in the British Army and His Role in Covert Counter-Terrorism Operations in Northern Ireland

The World of Saint Patrick

Alan Turing: The Enigma

Searching for Sappho: The Lost Songs and World of the First Woman Poet

Rory Gallagher: His Life and Times