Succession is the question as Cox directs and stars as a distillery boss tempting estranged brother Cumming back into the Highland fold Succession is the question as Cox directs and stars as a distillery boss tempting estranged brother Cumming back into the Highland fold F or his directorial debut, Brian Cox is painting in pretty broad strokes and primary colours; Glenrothan is a sentimental comedy-drama from screenwriter David Ashton about the troubled reunion of two brothers in Scotland. It