But many revealed their fears about the impending invasion and offered their prayers that Will was off to protect them. Grinning, he shook hands, offered wry dismissals of the Spanish threat, and raised their spirits with enthusiastic proclamations of England's strength; he played well the part he had been given.

At the carriage, the curtain was drawn back to reveal a man with an ascetic demeanour and a fixed mouth that appeared never to have smiled, his eyes dark and implacable. Francis Walsingham was approaching sixty, but his hair and beard were still black, as were his clothes, apart from a crisp white ruff.

"My lord," Will said.

"Master Swyfte. We have business." Walsingham's eyes flickered towards Nathaniel. "Come alone."

Will guessed the nature of the business immediately, for Nathaniel usually accompanied him everywhere and had been privy to some of the great secrets of state. Will turned to him and said, "Nat, I would ask a favour of you. Go to Grace and ensure she has all she needs."

Reading the gravity in Will's eyes, Nathaniel nodded curtly and pushed his way back through the crowd. It was in those silent moments of communication that Will valued Nathaniel more than ever; more than a servant, Nathaniel had become a trusted companion, perhaps even a friend. But friends did not keep secrets from each other, and Will guarded the biggest secret of all. It ensured his path was a lonely one.

Walsingham saw the familiar signs in Will's face. "Our knowledge and our work are a privilege," he said in his modulated, emotionless voice.

"We have all learned to love the lick of the lash," Will replied.

Walsingham held the carriage door open for Will to climb into the heavy perfume of the court-lavender, sandalwood, and rose from iron containers hanging in each of the four corners of the interior. They kept the stink of the city at bay, but also served a more serious purpose that only the most learned would recognise.