hour of the day they would find the boy somewhere in the Colonnades making a nuisance of himself on the escalators or in the lift, and he'd been right. It remained to be discovered what they would get in return for their bribe of unlimited cake.
'How's your head these days?' Diamond asked. 'No more blackouts, I hope?'
Clearly sensing that he had the high ground here, Matthew was in no hurry to respond. He glanced towards some schoolgirls at a table nearby, ran his fingers through his dark hair, and finally admitted, 'It's all right.'
'It's some time since we spoke. It was here, wasn't it? I was in disguise, if you remember.' When that got no reaction, Diamond added, 'I don't think Professor Jackman knows I played Santa, unless you mentioned it.'
Jackman said quickly, 'It's Greg. He calls me Greg.'
This earned a smirk from Matthew, a more positive response than Diamond had achieved so far, so Jackman took up the conversation. 'Mat and I haven't seen much of each other for a while, come to that. His mother wanted it that way after a misunderstanding and of course I respected her decision, but we had some good days out, didn't we, Mat?'
Matthew nodded.
The set-up was fast becoming ridiculous, two grown men trying to coax information from a schoolboy over afternoon tea. Diamond tried to sound less avuncular. 'Have you been to see your mother in the remand centre?'
A nod.
'This week?'
'Sunday.'
'How's she
'How's she bearing up?'
'All right.'
It was difficult to tell whether the brevity of the responses demonstrated unwillingness to answer or a wish to consume the cake without interruption.
'Mat, we're trying to help her,'Jackman said.
Diamond added, 'And it's up to you to help us.'
Matthew made no comment at all.
'I don't know if you understand how serious this is,' Diamond said gravely. 'Do they teach you anything about law at that school of yours? Your mother is being put on trial for murder, but she has a barrister to defend her and he must try to show that there is reasonable doubt. Follow me, Mat?'
The boy pushed aside the empty plate and wiped his lips. 'Yep.' He looked away from the table, over his shoulder.
'Another piece?'Jackman suggested.
'If I can have a Coke to wash it down.'
'Bring me some change, then.' He handed over a five-pound note.
While Matthew was at the self-service counter, Diamond said, 'Talk about sweeteners. Does this come out of Mrs Didrikson's defence fund?'
'Couldn't justify it on what we've heard so far,' said Jackman.
When the boy returned and put the plate of cake on the table, Diamond reached out and moved it deftly out of range. 'Now I want you to cast your mind back. Your mother told me about an incident she witnessed in front of Professor Jackman's house one day last summer. You were with her.'
Matthew was silent. His eyes were on the cake.
'There was some kind of dust-up between Mrs Jackman and a man.'
'Andy.'
'What did you say, son?'
'Andy. The man's name was Andy.'
'You've got a good memory, obviously. We'd like to find this Andy. You see, if he and Mrs Jackman were seen grappling with each other – as I understand they were – he has to be regarded as a possible suspect. Let's test that memory of yours and see exactly how much you can tell us about him.'
'What's the point?'
Diamond reined in his irritation. 'Son, we explained. Reasonable doubt.'
'I mean why ask me, when you can see him for yourself?'
'If we knew where to find him, we would. That's the point.'
'I know where.'
'What?'
'I know where you can see Andy. I've seen him heaps of times.'
The entire seat creaked as Diamond braced. 'Where?'
'In the Baths.'
'The Roman Baths, do you mean?'
'Mm.'
He slid the cake back towards the boy. 'Tell me more.'
'I told you,' said Matthew. 'If you want to talk to Andy, that's where to look.'
'He works there?'
'Don't know.' Matthew stuffed some cake in his mouth. 'Listen, all I know is that I've seen him down there quite a few times.'
'What were you doing down there?'
'Nothing much.' The dismissive answer appeared to be all they would get. Then the boy's bravado triggered a statement that was the longest Diamond had ever heard from him. 'I go down after school. It's a spooky place. I like it. The kids in my form started this dare. You have to go right through the Baths without being caught by the security men. You walk into the souvenir shop in Stall Street, and when no one is looking you whizz down the stairs marked staff only – which is really the exit – and you're inside. You have to watch out for the security men, of course, but if you're smart you can walk right through the whole of the Baths and come out in the Pump Room. No one stops you there because it's the restaurant. I've done it zillions of times. It's a doddle.'
'And that's where you see Andy?'
Matthew nodded.
'Doing what?'
'Pointing at stuff and talking mostly.'
'He's a guide, then?'
'Sort of. He has these students with him.'
'Students?' said Jackman, reddening suddenly.
'Not every time. Sometimes he's alone.'
Diamond was far ahead, assessing the implications, but the process of question and answer had to be completed. 'So he may be a lecturer of some sort?'
'Don't know.'
Matthew added nothing else of significance. And little was said at that stage between the two men. If Andy, the presumed supplier of Geraldine's cocaine, had connections with the university, Jackman was going to face some questions himself.
When they got up to leave, Diamond invited Matthew to visit the Roman Baths with him after school on Monday, the next opportunity. 'Meet me here,' he suggested, adding craftily, 'and if you're early, there may be time for another slice of fudge cake. Then you can help me do some detective work. But I want one thing clear: we enter the Baths the regular way, through the front. I'm too visible to creep down the back stairs.'
Matthew grinned and went off to look for his friends.
Out in Stall Street, Jackman was burning to say something. 'Before you ask. there's no school of archaeology at the university.'
'History?'
Jackman was actually shaking his head when he clapped his hand to his forehead and said, 'Wait a minute. I'm wrong. A section started up this year. Just a handful of lecturers and first-years. I can't say I know any of them. That's the truth.' He paused^ 'I suppose you want me to make inquiries.'
