For years, whisky connoisseurs whispered about a mysterious Irish whiskey called Green Spot and begged friends traveling to Ireland to track down a bottle for them. While Green Spot nearly disappeared from the market years ago along with the other "Spot Whiskeys" from Dublin's Mitchell & Son, the Mitchell family and Irish Distillers kept the brand alive through some of Irish Whiskey's darkest days.  We'll talk with Robert Jonathan Mitchell and Robert Mitchell of Mitchell & Son about the history - and the future - of the Spots on this week's WhiskyCast In-Depth.