This week’s new TV-on-DVD & Blu-ray releases include … Austin City Limits: Country (DVD) Cobra Kai: Season 4 (DVD) Eli Roth’s History of Horror: Season 3 (Blu-ray & DVD) Father Brown: Season Nine (DVD) Flowers In The Attic: The Origin (DVD) Guilt: Season 2 (Masterpiece Mystery!) (DVD) Ken Burns Presents Hiding in Plain Sight: Youth …