Ivory drew on a long, ornately carved pipe, filled with rich tobacco. He had acquired the pipe from natives on the coast of La Florida back in ’86, in a trade for a common English knife. He exhaled a thin ribbon of smoke, which was instantly gone on the wind. With a last look about him, he stepped back out into the street and headed down towards the quayside to buy herring and bread. A man in his mid-thirties, he wore long whiskers and combed his straggling grey-black hair forward across his brow. He looked what he was: a man of the sea. With his lean chest, his weather-lined hands and salt-engrained cheeks, there was little to pick him out from all the others in this seafaring town. His gait was rolling like all the rest of them: bodies that could never quite forget the pitch and heave of the ocean swell. only the precise sparkle of his luminous,cornflower-blue eyes set him apart.

All around him there was noise – traders calling wares, seamen singing shanties as they hauled at cables, gulls cawing as they swooped for manavilins of fish, whores and gossips screaming oaths at each other, idlers laughing. Who could hear a heartbeat or a footfall above such a din?

The man with the wheel-lock pistol shuffled forward with the crowd, protected by it. He was unremarkable and stocky, totally enveloped in a cloak that billowed about him like a top- gallant sail and cowled his face. His weapon was loaded and primed, ready to kill. Not quite yet, though, not here, not now. Not with all these people about. His present name was Janus Trayne, though that was not his real one. He had had many names in his forty years.

He followed his quarry down to the quay where men from a laden smack were hauling their catch ashore. He watched Ivory bargain for a pair of fish, all the while puffing at his strange pipe, then followed him to the baker where he bought a two-pound loaf and some butter.

Janus Trayne was not from these parts. He was in the pay of Spain, though not a native of that nation. His mission was to prise something from William Ivory, some instrument that he kept about his person at all times. Trayne did not understand what it was, nor did he care. All that mattered to him was that his masters would pay handsomely for it – two hundred ducats of gold.

He held back twenty yards from Ivory. His chance would come soon enough.

From the baker’s, Ivory walked on a little further, to the cook- house that stood in the front bank of houses, close to the harbour. The low sun was blanked out by the towering fore- castle of an armed merchantman, moored for refitting before its next voyage. At the cookhouse window, he handed over his two fish to a large, sweaty goodwife for scaling, gutting and frying. She tried to engage him in conversation, but he ignored her and walked down to the water’s edge to smoke his pipe and wait.

Less than ten minutes later, the drab called to him and he collected his food on a wide trencher, paying her a penny. He settled down in a quiet spot at the waterside to eat. First he laid his smoldering pipe beside him, then, with a sharp blade, he cut into the tender flesh of the herring and released the succulent juices and savoury smells. He ate slowly, chewing at hunks of bread and butter between bites of fish, taking his time, enjoying the food and the perfect day.

The events of the next minute happened at bewildering speed.

There was the hard touch of a hand on his left shoulder, then the cold muzzle of a pistol at his right temple. Ivory dropped the trencher from his lap and tried to scramble back from the assailant.

‘Give me the instrument.’ The voice was low, growling. ‘you know exactly what I want, Ivory.’

So they had come for him at last. But it was not him they wanted, it was the glass.

‘I do not have it,’ he said, wrapping his arms around his chest as he leant away from the pistol. ‘Not here—’

‘Then I will cut it from you.’

And suddenly there was the shadow of another man, bearing down on them like a clawed demon. The demon’s talon-like right hand pulled the assailant’s pistol down while the left arm came past his neck, across his chest. Trayne might have been strong, but the demon was quicker. Clenching a blade, he thrust upwards into Trayne’s wrist. The man gasped with shock and pain as the sharp steel sliced up through tendons and flesh, into the very bone of his right arm. His gasp turned to a deep howl. The wadding and ball rolled harmlessly from the muzzle of his pistol. His finger pulled the trigger, igniting powder with a flash and a loud report. Fire spat out and smoke billowed, but there was no shot. The gun fell from his weakened grasp.

Ivory watched in fascinated horror. Within the space of a few seconds a man had held a pistol to his head and now that very man was squatting there with a knife protruding through his wrist, a knife thrust into him by a second assailant.