Well I took Samoan's advice (on the "Summer Of Rockets " and "The Looming Tower" thread) and watched this three parter, from 20 years ago, yesterday.
Absolutely marvellous tale.... beautifully scripted, wonderfully taut and full of suspense, and absolutely brilliant acting performances by all the cast but, particularly, Timothy Spall and the utterly divine Lindsay Duncan. Duncan was stunning throughout and really got the complexities of her character (and the plot) across quite magnificently.
Cheers Samoan!