The only reasons it’s not 5 stars is that I find it hard to give 5 stars because 5 stars means it can’t be improved. Now .. how could this be improved .. I have no idea, just wonderful. Quite wonderful. The original book coming from one of ‘my Johns’ (LeCarre), provided a solid foundation. Cast GREAT. PSH .. magnificent. Cannot be,I eve it’s taken me 10 years to get to it.