receiving information faster than the two civilian computer operators could process it. Reports had been coming in since eleven from the detectives sent to interview members of the Bloodhounds; the Scenes of Crime team had sent in their preliminary findings; and a time had been fixed for the autopsy. 'Pity,' said Diamond when the message was handed to him. 'Any time but tomorrow morning would have been fine for me. I may not be able to attend. How would you like to stand in for me, Julie? One of us ought to be there.'
This may have sounded like a request, but it was an order, and Julie Hargreaves knew her boss's Byzantine reasoning well enough not to question it. The head of the murder squad didn't care to admit that he fainted at the sight of a dissecting knife, even though almost everyone guessed this was so. Over the years, he had resorted to all kinds of strategems to miss postmortems.
Moving inexorably on, he asked her, 'Did you run that check on Sid Towers? Any previous?'
'A clean sheet, if that really is his name.'
'Pity. What was he doing in someone else's boat, then? What was he up to?'
Julie had no theory to offer. Instead, she said, 'I had a word with his employers. The big white chief at Impregnable says Sid was one of their most reliable men.'
'Night watchman, wasn't he?'
'They don't call it that these days.'
He rolled his eyes upward. 'Tell me then. What's the jargon? What should I have said? 'Small hours surveillance specialist'?'
She laughed. 'Anyway, he was guarding office furniture.'
'And as we know, desperate men will stop at nothing to nick a filing cabinet.'
Julie went on staunchly supplying the facts. 'He's been with Impregnable for four years. He liked working alone, which suited them, because most security guards prefer to work in teams, particularly at night.'
'A loner.'
'Chronically so, according to the personnel director, only it didn't interfere with his work. He was conscientious, a good timekeeper, very observant.'
'We could have used him here.' He digested the information for a moment. 'Impregnable are a big organization, aren't they? All kinds of security work. I've seen their vans around the city.'
'They do a certain amount with the banks and building societies,' said Julie. 'Sid had worked on the vans. They also install security systems.'
Seeing John Wigfull approaching, Diamond cut the conversation. 'Something new, John? Am I mistaken, or are the whiskers twitching?'
'I was thinking-' Wigfull began.
'Wish I had the time. What about?'
'That riddle. The second one. I believe I've worked out what part of it means.'
'Which part is that? Wait a minute, John.' He flapped his hand in the direction of some of his officers in noisy conversation. 'Zip it up for a mo, will you? Chief Inspector Wigfull is trying to make himself heard.'
'Well, it's the last two lines,' said Wigfull. ' 'Look for the lady in the locked room / At seventeen.' '
'Yes?'
'It struck me that 'seventeen' must refer to the chapter in the book, the John Dickson Carr book that Motion was about to read from. Chapter seventeen. 'The Locked-Room Lecture.' If the lady is Queen Victoria, then the riddle tells us to look for her in the locked room at seventeen, and that's precisely where the Penny Black cover was found.'
'You think so?' Diamond didn't sound bowled over by the deduction.
'It makes sense,' Wigfull insisted.
'Perfect sense,' Diamond said. 'But it's too late, isn't it? Too late for us to do anything about it. This clever dick who pinched the stamp wasn't really giving anything away in advance. How could we have known that the stamp was going to turn up in chapter seventeen of some obscure book written sixty years ago? We didn't stand a snowball's chance. Like the first rhyme we were given, it's easy enough to work out after the event. Did you get the first two lines? How did they go, exactly?'
Julie remembered them. ' 'Whither Victoria and with whom-The Grand Old Queen?''
Wigfull said with understandable pique, 'It's obvious, isn't it? The last two lines were the puzzle.'
'So you worked out who the Grand Old Queen is?' said Diamond.
'Victoria, obviously.'
'Can't say I'm with you there, old boy,' said Diamond. 'For my money, it was a reference to Mr. Milo Motion.'
Wigfull blinked and said, 'The man's gay! You could be right.'
'You have to be an insensitive brute like me to get the point,' said Diamond.
Wigfull said, 'You are right.'
'But where does it get us?' Diamond developed his theme. 'All we can say is that the stamp theft was done according to plan. The way your Penny Black turned up last night was no mistake. It happened exactly as predicted. Milo Motion was earmarked as the fall guy.'
Julie said, 'But it does tell us that the thief knew Milo would take the book to the Bloodhounds meeting and open it at chapter seventeen?'
'Right!' said Wigfull. 'We can count the suspects on one hand.'
'Two,' said Diamond. 'And you may need your feet as well.'
'I'm speaking of the Bloodhounds.'
'There are six of them.'
'Ah, but we can eliminate Motion,' Wigfull pointed out. 'That leaves five: Mrs. Wycherley, Miss Chilmark, Mrs. Shaw, Miss Miller, and the man, Rupert Darby.'
'What about Sid Towers?'
'He's dead.'
'He wasn't dead when the stamp was stolen,' Diamond reminded him. 'If it were me investigating the stamp theft, I'd keep Sid Towers in the frame, dead or not.'
'Was the man capable of such a theft?'
'Certainly. He was easily overlooked, but not dim. He knew all about security. He'd have known how to suss out a building for a break-in.'
'I can see that. But he doesn't strike me as the sort to compose riddles drawing attention to the crime.'
'Why not? He was a reader of whodunits. Plenty of time to himself to think it through. Setting a puzzle for the police might have appealed to him.'
Wigfull weighed the suggestion. 'I suppose it's possible. But why was he killed?' He raised a finger like an umpire as he answered his own question. 'Maybe the killer took offense at the way he chose to return the stamp. The obvious suspect would be Motion, but he's the one with the alibi.'
'Now, John,' Diamond said sharply. 'The murder is my business. I don't want interference.'
'You offered me some advice.'
'Here's some more, then. You said you could count the suspects on one hand. You've just added Towers. You must also add anyone Motion spoke to-anyone who learned that he was taking the Dickson Garr book to that meeting.'
'That's scraping the barrel, isn't it? From all I hear, he's another loner.'
Diamond gave a shrug.
Wigfull was forced to concede. 'Technically, I suppose you're right. Has anything helpful come up in the interviews?'
'Nothing startling. They're still being fed into the system, but I've heard from all the officers who carried them out. We caught up with everyone in the end, all the Bloodhounds, anyway. A couple of them weren't at home, and we nobbled them later.'
'My number one suspect is the man.'
'Why do you say that?'
A rare smile lit Wigfull's face. 'I'm speaking of my case, the theft of the stamp. I can't see any of those women walking through the streets of Bath with a window cleaner's ladder and bucket.'
'Sexist.'