'You may be able to get rid of even more.'
'Why?'
'Because I think I struck gold at the first address.'
'The one in Pimlico?'
'Yes, Inspector,' said Leeming before taking a long drink of beer. 'It's a town house owned by Sir Marcus Hetherington. He's gone back to his estates in Essex so I wasn't able to speak to the gentleman himself, but I talked to a servant.'
'And?'
'Sir Marcus had a long and distinguished career in the army.'
'How old would he be?'
'Well into his seventies, apparently.'
'Then he could be our man.'
'I'm fairly certain of it,' said Leeming. 'When I mentioned the name of Luke Rogan, the servant claimed that he had never heard of him. But I had a strong suspicion that he was lying. He's obviously very loyal to his master.'
'Did you press him in the matter?'
'No, sir. I went away. When I'd visited the other three addresses, I took a cab back to Pimlico and spoke to the same man. This time I showed him that description of Luke Rogan in the newspaper and reminded him that it was a crime to hold back evidence from the police. That rattled him, I could see.'
'Did he buckle?'
'Eventually,' said Leeming. 'He remembered something that had slipped his mind. It seems that a man who called himself Rogan had called at the house only yesterday. That settles it for me, sir.'
'And me,' said Colbeck. 'How quickly can you drink that beer?'
'Why, sir?'
'We're going to catch a train to Essex.'
It was some while before Sir Marcus Hetherington returned and Rogan began to worry. When he stepped outside, however, he saw the old man coming towards him with a small bag in his hand. The sight made him relax. Sir Marcus ushered him back inside and closed the door behind them. Then he held out the bag.
'This is all you get, mind,' he warned. 'Your final payment.'
'Thank you,' said Rogan, snatching the bag.
'Count it out to make sure that it's all there.'
'I will, Sir Marcus.'
There was a little table in the corner. Luke Rogan sat beside it and tipped out the bundle of notes and coins. He began to count the money but did not get far. Taking out a pistol from inside his coat, Sir Marcus shot him in the head from close range. Blood spurted everywhere and stained the banknotes on the table. Rogan slumped forward. Sir Marcus was relieved, convinced that he had just rid himself of the one person who could connect the series of crimes to him. Rogan had deserved what he got. The old man had no sympathy.
Putting the gun aside, he took down an empty sack that was hanging from a nail and used it to cover Rogan's head. Then he opened the door, checked that nobody was about and took hold of the body under the armpits. Rogan was a solid man but Sir Marcus was still strong enough to drag him to the disused well nearby. The corpse plummeted down the shaft and disappeared under the water. The money was soon thrown after Rogan. When he had strewn handfuls of straw down the well, Sir Marcus reclaimed his pistol and went off to change for dinner.
An hour later, he and Lady Hetherington were at either end of the long oak table in the dining room, eating their meal and engaging in desultory conversation. Sir Marcus was chastened by the turn of events. In being forced to kill Rogan, he felt that a chapter in his life had just been concluded. He had to accept that his plan to destroy the railway in France had failed. But at least he was safe. He could now resume his accepted routine, going through the social rounds in Essex with his wife and making regular trips to his club in London. Nobody would ever know that he had once been associated with a private detective named Luke Rogan.
When the servant entered the room, and apologised for the interruption, he shattered his master's sense of security.
'There's an Inspector Colbeck to see you, Sir Marcus.'
'Who?' The old man almost choked.
'Inspector Colbeck. He's a detective from Scotland Yard and he has a Sergeant Leeming with him. They request a few moments of your time. What shall I tell them, Sir Marcus?'
'Show them into the library,' said the other, getting to his feet and dabbing at his mouth with a napkin. 'Nothing to be alarmed about, my dear,' he added to his wife. 'It's probably something to do with those poachers who've been bothering us. Do excuse me.'
The servant had already left. Before he followed him, Sir Marcus paused to kiss his wife gently on the cheek and squeeze her shoulder with absent-minded affection. Then he straightened his shoulders and went out. The detectives were waiting for him in the library, a long room that was lined with bookshelves on three walls, the other being covered with paintings of famous battles from the Napoleonic Wars. Many of the volumes there were devoted to military history.
Robert Colbeck introduced himself and his companion. He gave Sir Marcus no opportunity to remark on his facial injuries. His initial question was all the more unsettling for being delivered in a tone of studied politeness.
'Are you acquainted with a man named Luke Rogan?'
'No,' replied Sir Marcus. 'Never heard of him.'
'You've never employed such an individual?'
'Of course not.'
'I notice a copy of The Times on the table over there,' said Colbeck with a nod in that direction. 'If you've read it, you'll have encountered Rogan's name there and know why we've taken such an interest in him. I've a particular reason for wanting to apprehend him, Sir Marcus. Earlier today, he did his best to kill me.'
'Did you instruct him to do that, Sir Marcus?' asked Leeming.
'Don't be so preposterous, man!' shouted the other.
'It's a logical assumption.'
'It's a brazen insult, Sergeant.'
'Not if it's true.'
'Sergeant Leeming speaks with authority,' said Colbeck, taking over again. 'He called at your house in Pimlico this afternoon. According to the servant he met, Luke Rogan visited the house yesterday and spent some time in your company. I think that you are a liar, Sir Marcus.' He gave an inquiring smile. 'Do you regard that as an insult as well?'
The old man would not yield an inch. 'You have no right to browbeat me in my own home,' he said. 'I must ask you to leave.'
'And we must respectfully decline that invitation. We've spent far too long on this investigation to pay any heed to your bluster. The facts are these,' Colbeck went on, brusquely. 'You attended a lecture given by Gaston Chabal, who was working as an engineer on the railway between Mantes and Caen. Because that railway would one day connect Paris with a port that also houses an arsenal, you spied a danger of invasion. To avert that danger, you tried to bring the railway to a halt. That being the case, Chabal's murder took on symbolic significance.' His smile was much colder this time. 'Do I need to go on, Sir Marcus?'
'We are well aware of your military record,' said Leeming. 'You fought against the French for years. You can only ever see them as an enemy, can't you?'
'They are an enemy!' roared Sir Marcus.
'We're at peace with them now.'
'That's only an illusion, Sergeant. I knew the rogues when they held sway over a great part of Europe and plotted to add us to their empire. Thanks to us, Napoleon was stopped. It would be criminal to allow another Napoleon to succeed in his place.'
'That's why you had Chabal killed, isn't it?' said Colbeck. 'He had the misfortune to be a Frenchman.'