This episode explores the long, eventful history of Carrickfergus Castle: its origins on the Rock of Fergus, Norman building by John de Courcy, medieval sieges, adaptation to cannon and artillery, and roles in the Williamite War, a French landing, and the American Revolution.
It also covers local legend — the ghost known as Buttoncap (linked to a drummer named Timothy Lavery), secret tunnels and later Victorian defenses — and reflects on how one fortress has witnessed nearly 850 years of changing warfare and community life.