2020 will mark the fiftieth anniversary of the Arms Crisis, a political scandal that rocked Fianna Fáil to its very core. High profile names like Haughey and Blaney, so central to 20th century Irish politics, were in the firing line, as accusations were made that Government Ministers - with the help of an Irish Army Officer - were attempting to arm the fledgling republican movement in the North. Reputations were both made, and destroyed, in the affair.  Donal Fallon joins Gavan Reilly to reflect on the story behind it.