How the Irish Saved Civilization: The Untold Story of Ireland's Heroic Role from the Fall of Rome to the Rise of Medieval Europe

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

The Island at the Center of the World: The Epic Story of Dutch Manhattan and the Forgotten Colony that Shaped America

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

The Glorious Heresies: 'A big, brassy, sexy beast of a book' IRISH TIMES

Red Sky in Morning: author of the 2023 Booker Prize-Winning novel Prophet Song

Born to Be Hanged: The Epic Story of the Gentlemen Pirates Who Raided the South Seas, Rescued a Princess, and Stole a Fortune

The Crooked Branch

The Outside Boy

The Thirty Years War: Europe's Tragedy

The Padre: The True Story of the Irish Priest who Armed the IRA with Gaddafi's Money

The History of Ireland

Two Treatises of Government and A Letter Concerning Toleration

Secret Child

The British Empire

Four Shots in the Night: A True Story of Stakeknife, Murder and Justice in Northern Ireland

Away Off Shore: Nantucket Island and Its People, 1602-1890

Black Flags, Blue Waters: The Epic History of America's Most Notorious Pirates