‘I’m still not convinced that it’s the best use of his time.’

‘It could be, sir.’

‘The man may not even show up.’

‘That’s a possibility we have to allow for.’

‘Do you think he’s in any way associated with the crime?’

‘It remains to be seen, sir. But even if he’s not involved in the murder, he’s guilty of another crime — libel. What he wrote about Cyril Ablatt is both insulting and untrue.’

‘You can’t libel the dead, Inspector.’

‘The young man was alive when those harsh words were painted.’

Chatfield was dismissive. ‘That’s immaterial,’ he said, flicking a hand. ‘Before he acts as a nightwatchman, what will the sergeant be doing?’

‘I’m sending him off to the cemetery to speak to Horrie Waldron.’

‘Is he that gravedigger?’

‘He is indeed, sir.’

‘Good,’ said Chatfield, rubbing his hands together. ‘That’s the one positive lead that you’ve managed to uncover. This fellow fits the picture I envisage of the killer. He knows Ablatt well, he loathes conscientious objectors, he has a record of causing trouble and, I’ll venture, he’s often sufficiently inebriated to throw off all inhibition. There’s no need to send Sergeant Keedy. It’s a job for a uniformed constable. He can arrest Waldron and bring him in for questioning.’

‘I’d strongly advise against that, sir.’

‘Use your eyes, man! He’s a prime suspect.’

‘He’s certainly worthy of investigation,’ said Marmion, coolly, ‘but we have no evidence to arrest him. Besides, we don’t want to alert him to the fact that we harbour suspicions about him or he’s likely to be thrown on the defensive. A heavy-handed approach would be a mistake.’

‘There’s a history of friction between him and Ablatt, leading to that incident at the library. Isn’t that what Leach told you?’

‘Yes, sir, but he also told me that Waldron spends most of his free time in a pub. How would he even know about yesterday’s meeting at Devonshire House or be aware of Ablatt’s movements after he left Bishopsgate? I’ll wager that he’s sometimes too drunk to remember what day of the week it is. This murder involved calculation and I don’t believe that Waldron is capable of that.’

Chatfield was checked. ‘Please yourself,’ he said, patently annoyed at the rebuff. ‘You’re nominally in charge of this investigation. If and when it emerges that this fellow was indeed the killer, I hope that you’ll have the grace to apologise to me.’

‘I’ll do so on bended knee, Superintendent.’

‘Sarcasm ill becomes you.’

‘Put it down to lack of food,’ said Marmion, getting up again. ‘After I’ve had breakfast, I’m sure that I’ll feel much better. As for Waldron,’ he added, ‘I promise you that — if he is guilty — he won’t slip through our fingers.’

Abney Park cemetery was much more than a burial ground. It was also an arboretum, a place of architectural interest and a vital green lung in the urban sprawl of Stoke Newington. Horace Waldron never noticed the vast expanse of trees and shrubs. Nor did he pay any heed to the magnificent gates, the Egyptian lodges and the Gothic chapel. His gaze was fixed solely on the earth he had to shift in order to accommodate a new guest. Waldron was a burly man in his late fifties with an unsightly face, pitted with age and reddened by alcohol. His clothes were grimed beyond reclaim and his cap sat precariously on the back of his head. When he arrived for work that morning, he carried a spade over his shoulder. Putting it aside, he first stepped behind a large gravestone so that he could urinate against it with a measure of privacy. After spitting on the ground, he was about to start work when he noticed the dried bloodstains along the edge of his spade. He cleaned them off under the tap beside the shed where he usually kept his implements.

Laughing to himself, he was soon digging his first grave of the day.

When the notion was put to him, Keedy didn’t find it at all appealing. Over a cup of tea in the canteen, he explored the idea without enthusiasm.

‘What are the chances of him coming tonight?’

‘Your guess is as good as mine.’

‘That’s the trouble, Harv. We’re very much in the realm of guesswork. We’re guessing that the artist lives nearby and would have an irresistible compulsion to pick up his brush tonight and get back to work.’

‘He may wait a few days before doing so,’ admitted Marmion.

‘He may not even come back at all.’

‘Oh, I fancy that he — or she, for that matter — will appear before long.’

‘So I have to shiver all through the night in someone’s front room for what could be a week or more. Is that what you’re saying?’

‘No, it isn’t, Joe. And if you think the assignment is too onerous, I can always find someone else to shoulder it. You were the one who said we needed to catch him. I was simply giving you the first chance to do that.’

‘Yes,’ confessed Keedy, ‘he certainly needs to be nabbed. It’s just that I was hoping for a little free time at the end of the day.’

‘Even romance takes second place in a murder case, especially one as problematical as this. You’ll have to disappoint her, I’m afraid.’

Keedy made no reply. He thought about the jibes painted on the wall of the Ablatt house. They were cruel and vulgar. Whoever put them there had spent a fair amount of time up a ladder. The artist could have relied on the fact that, even if he’d been discovered at work, nobody was likely to report him to the police. Most people in the area would have condoned what he was doing. A conscientious objector was being punished. Thick white paint was more conspicuous than a frail white feather.

‘I’ll do it, Harv,’ he said at length. ‘It could be important.’

‘I agree. Before that, however, we’ve other work to do.’

‘What can you tell me about this gravedigger you want me to find?’

‘All I know is what I picked up from Gordon Leach.’

He passed on the description given to him of Horrie Waldron then offered his assessment of the baker. Keedy had already told him about the visit to Hambridge’s house and how the carpenter was devastated by the news. Unable to make contact with Mansel Price, the sergeant had left a message for him at his digs.

‘We can be sure of one thing,’ said Marmion. ‘All three of his friends relied completely on Ablatt. How will his death affect their resolve? Or, to put it another way, how conscientious will their objections be now that he’s gone?’

‘Hambridge is a Quaker. It won’t change his mind.’

‘I’m less certain about Leach. He could waver.’

‘Apparently, Price is one of those characters who hates all authority.’

‘So do I when it’s in the hands of someone like the superintendent.’

Keedy chuckled. ‘Did you get another rap over the knuckles from Chat?’

‘He wanted Waldron arrested and hauled into Scotland Yard.’

‘But we have nothing on him yet.’

‘According to Superintendent Chatfield, we do. We have a man with motive and means to kill Ablatt. We simply have to establish that he had the opportunity as well and we can charge him.’

‘It’s another of Chat’s barmy theories.’

‘In fairness,’ conceded Marmion, ‘they’re not always so barmy. He made some very significant arrests during his time as an inspector. However, it’s an open question as to whether that was luck or judgement. We’ll have to give him the benefit of the doubt. Finish your tea,’ he went on, standing up. ‘We have people to see and answers to get.’

‘Right,’ said Keedy, swallowing the last of his tea then leaping to his feet. ‘I’m ready, Harv. Will you give me a lift to the cemetery?’

‘Of course — and we must arrange a place to meet up afterwards.’

‘Where do we go then?’

‘We need to speak to a certain photographer.’

They left the canteen and walked side by side along the corridor. All that lay ahead of them was the promise of hard work, much of which would be tedious and unrewarding. Yet they felt excited in a way that they always did at the start of a hunt for a killer. Keedy recalled what the inspector had said earlier.