Yet, curiously, the violence of the discharge seemed very disproportionate to the gun’s effect. Lord John watched the missile’s strike and there would be a gout of mud, perhaps an explosion if the gun had fired shell, but so little destruction. Once he had seen a Lancer fall from his horse, but within seconds the man had been on his feet and another Frenchman had quickly rescued the frightened horse.

At Genappe Lord John had been close enough to see the Life Guards charge and he had even spurred forward to join them. He had watched a sword snap a lance shaft like a twig. He had seen a Lancer’s skull crushed by a blade. He had watched a Life Guard twisting like a fish on the point of a lance. He had heard the grunt of a man making a killing lunge, and heard the hiss of air from a wounded trooper’s lungs. He had smelt the sweet thickness of blood and the acrid drift of pistol smoke in the soaking air. Blood from a dying horse spewed onto the road to be instantly diluted by rain. By the time Lord John had drawn his sword and touched his spurs to his horse’s flanks, the French had pulled back leaving a dozen dead and twice as many wounded. It had all been so quick and so confusing, but an acquaintance of Lord John’s, a Captain Kelly whom Lord John had often met when he was on royal duty, gave his lordship a happy confident smile. “Bagged a brace of them!”

“Well done, Ned.”

“Once you’re past the lance point it’s a bit like killing rabbits.” Captain Kelly began wiping the blood off his blade. “Too easy, really.”

Lord John tried to imagine slipping past a lance point and found it hard. After the skirmish, riding through the village street, he had seen the fear on the faces of the civilians and he had felt very superior to such muddy drab creatures. Later, north of Genappe, when the French did not pursue so closely, he noticed how nervous both sets of cavalry were of each other. A lot of threats were made, and men would ride belligerently forward as if to provoke the other side, but if there was no clear advantage to be gained for either force, the two sides would disengage without a battle. It was all very odd.

Strangest of all were the rockets. Lord John had heard much of the rocket corps, for they were a pet project of his former master, the Prince Regent, but this was the first time he had seen them fired. The first missile was wonderfully accurate and so lethal that every French gun crew within a hundred yards had fled in panic, but the next salvo was laughable. One rocket had seemed to threaten the group of Lord Uxbridge’s staff officers and they had whooped gleefully as they scattered away from its hissing shell.

Lord John spurred his horse too hard and it almost bolted with him. He managed to curb the mare after a hundred yards and turned to see the rocket buried in the mud with its stick burning merrily above it. The buried powder charge exploded harmlessly.

Then, looking towards the road to find his friends, he saw Sharpe coming towards him instead.

For a second Lord John knew he must stand and fight. The next second he realized he would be dead if he did.

And so he turned and fled.

Lord John’s servants were somewhere ahead with the cavalry’s baggage. Harris, the coachman, who had ridden from Brussels with a letter from Jane, had also ridden ahead to find that night’s quarters. Christopher Manvell and Lord John’s other friends had disappeared in the panic engendered by the rogue rocket. Lord John was suddenly alone in the pelting rain with his one dreadful enemy spurring towards him.

He gave his horse its head. It was a good horse, five years old and trained on the hunting field. It had stamina and speed, and was certainly a faster horse than Sharpe rode, and Lord John had learned on the hunting field how best to ride treacherous country. He must have stretched his lead by an extra hundred yards in the first half mile. There were ironic cheers from the road where the retreating gunners supposed the two officers to be racing.

Lord John was oblivious to the cheers and the rain; indeed to everything but his predicament. He was cursing himself; he should have ridden towards his companions and sheltered under their protection, but instead, in a blind panic, he was racing ever further away from help. He dared not look behind. His horse thundered along a field margin, raced over soaking rows of newly scythed hay, then galloped down a gentle incline towards a hedge, beyond which, and across one more field, a long dark copse of trees offered a concealed path back to the road.

His horse almost baulked at the hedge, not because of the height of the blackthorn, but because the approach to the obstacle was inches deep in mud. Lord John savagely rowelled the beast, and somehow it lumbered and scraped its way over the thorns. It landed heavily, splashing thick mud that soaked Lord John’s red coat. He spurred-the horse again, forcing it to struggle up from the sticky ground. The pasture was firmer going, but even here the earth was spongy from rain.

He reached the trees safely and, looking back from their shelter, saw that Sharpe had yet to negotiate the deep mud at the hedge. Lord John felt safe. He ducked into the thick and leafy copse which proved a perfect hiding place. The road, along which the guns crashed and jangled, was no more than a quarter-mile away and Lord John would be hidden under the wood’s leafy, dripping cover right to the road’s verge. There he could wait until his friends offered him support. Sharpe, he was certain, would try nothing violent in front of witnesses.

Lord John slowed his blown horse to a walk, letting it pick a twisting path between oak and beech. The rain spattered on the uppermost leaves and dripped miserably from the lower. A scrabbling sound to his right made him whip round in sudden alarm, but it was only a red squirrel racing along an oak branch. He sagged in the saddle, feeling despair.

He despaired because of honour. Honour was the simple code of the gentleman. Honour said a man did not run from an enemy, honour said a man did not flirt with the temptations of murder, and honour said a man did not show fear. Honour was the thin line that protected the privileged from disgrace, and Lord John, slouched in his wet saddle in a damp wood under a thunderous sky, knew he had run his honour ragged. Jane, in her letter, had threatened to leave him if he fulfilled his promise to return Sharpe’s money. How long, she had asked, would Lord John allow Sharpe to persecute her happiness? If Lord John could not settle Sharpe, then she would find a man who would. She had underlined the word ‘man’ three times.

He stopped his horse. He could hear the gun wheels ahead of him, and closer, apparently on a ride that must have pierced the wood parallel to the road, the sound of hooves as a troop of cavalry splashed northwards.

Another voice nagged at Lord John. He could not bear it if another man was to take Jane. Jealousy racked him. He had persuaded himself that her sudden desperation to marry him was a measure of Jane’s passionate love, and to think of that passion being expended for another man’s happiness was more than he could endure.

A curb chain clinked. Lord John looked up to see his enemy in front of him. Sharpe must have guessed Lord John would double back under the cover of the trees, and so had ridden slantwise to where the wood met the road, then turned eastwards. Now, just twenty paces off, he sat his horse and stared at Lord John.

Lord John felt oddly calm. A few moments before his nerves had been jangled by a squirrel, but now that his enemy had come, and now that he knew what had to be done, he surprised himself by his calmness.

Neither man spoke. There was nothing to say.

Lord John licked the rainwater from his lips. If he drew his sword then he knew the green-jacketed killer would be on him like a fury, so he kept his hand well away from the silver-wrapped hilt of his sword, and instead, not caring for honour, he drew the long-barrelled pistol that was holstered on his saddle. It was a beautiful gun, a gift from Jane, with a percussion cap instead of a flint. Its elegantly curved pistol-hilt was of chased walnut and its long rifled barrel was blued and gilded. The rifling gave the weapon a deadly accuracy, while the expensive percussion cap made it proof against the worst downpour of rain. He drew back the hammer, exposing the small copper wafer in which the gunpowder was packed. When that wafer was struck a lance of flame would pierce through the touchhole to spark themain charge.