Seduced by her charms, William moves Sugar out of Mrs Castaway's brothel and into a flat of her own in Marylebone. Finally independent, Sugar becomes a fixture in William's life and secretly continues her role as guardian angel to his volatile wife Agnes. But as their relationship intensifies, will Sugar take things too far?

• Michel Faber
• Lucinda Coxon

• Chris O'Dowd
• Shirley Henderson
• Mark Gatiss