Frees you for what? thought Rickards. For murder, that iconoclastic act of protest and defiance, that single step across an unmarked, undefended frontier which, once taken, sets a man apart for ever from the rest of his kind? But he decided to defer the obvious question.
Instead he asked: 'What sort of family had he?' The question sounded innocuous and banal, as if they were casually discussing a common acquaintance.
'He had a father and a mother. That sort of family. What other sort is there?'
But Rickards had resolved on patience. It was not a ploy that came easily to him, but he could recognize pain when its taut and naked sinews were thrust so close to his face. He said mildly: 'I mean what sort of background did he come from? Had he brothers or sisters?'
'His father is a country parson. His mother is a country parson's wife. He was an only child. His death nearly destroyed them. If we could have made it look like an accident we would have. If lying could have helped, I would have lied. Why the hell didn't he drown himself? That way there would at least have been room for doubt. Is that what you meant by background?'
'It's helping to fill in the picture.' He paused and then, almost casually, asked the seminal question. 'Did Hilary Robarts know that you and Tobias Gledhill had spent a night together?'
'Whatever possible relevance…? All right, it's your job to do the scavenging. I know the system. You trawl up everything you can get your nets to and then throw away what you don't want. In the process you learn a lot of secrets you've no particular right to know and cause a lot of pain. Do you enjoy that? Is that what gives you your kicks?'
'Just answer the question, sir.'
'Yes, Hilary knew. She found out by one of those coincidences which seem a one in a million chance when they happen but which aren't really so remarkable or unusual in real life. She drove past my house when Toby and I were leaving just after 7.30 in the morning. She had taken a day's leave, apparently, and must have left home early to drive off somewhere. It's no use asking me where because I don't know. I suppose, like most other people, she has friends she visits from time to time. I mean, someone somewhere must have liked her.'
'Did she ever speak about the encounter, to you or to anyone else you know?'
'She didn't make it public property. I think she regarded it as too valuable a piece of information to cast before the swine. She liked power, and this was certainly power of a kind. As she drove past, she slowed down almost to walking pace and stared straight into my eyes. I can remember that look: amusement, changing to contempt, then triumph. We understood each other all right. But she never subsequently spoke a word to me.'
'Did she talk about it to Mr Gledhill?'
'Oh yes, she spoke to Toby all right. That's the reason he killed himself.'
'How do you know that she spoke to him? Did he tell you?'
'No.'
'You're suggesting that she blackmailed him?'
'I'm suggesting that he was unhappy, muddled, uncertain about every aspect of his life, his research, his future, his sexuality. I know that she attracted him sexually. He wanted her. She was one of those dominant, physically powerful women who do attract sensitive men like Toby. I think she knew that and she used it. I don't know when she got hold of him or what she said to him, but I'm bloody sure that he'd be alive now if it weren't for Hilary Robarts. And if that gives me a motive for her murder, you're damned right. But I didn't kill her and, that being so, you won't find any evidence that I did. Part of me, a very small part, is actually sorry that she's dead. I didn't like her and I don't think she was a happy woman, or even a particularly useful one. But she was healthy and intelligent and she was young. Death ought to be for the old, the sick and the tired. What I feel is a touch of lachrymae rerum. Even the death of an enemy diminishes us apparently, or so, in certain moods, it seems. But that doesn't mean I'd want her alive again. But it's possible I'm prejudiced, perhaps even unjust. When Toby was happy, no one was more joyous. When he was miserable he went down into his private hell. Perhaps she could reach him there, could help him. I know I couldn't. It's difficult to comfort a friend when you suspect that he sees it as a ploy to get him into your bed.'
Rickards said: 'You've been remarkably frank in suggesting a motive for yourself. But you haven't given us a single piece of concrete evidence to support your allegation that Hilary Robarts was in any way responsible for Toby Gledhill's death.'
Lessingham looked straight into his eyes and seemed to be considering, then he said: 'I've gone so far, I may as well tell you the rest. He spoke to me when he passed me on his way to death. He said, "Tell Hilary she doesn't have to worry any more. I've made my choice." The next time I saw him he was climbing the fuelling machine. He balanced on it for a second, then dived down on top of the reactor. He meant me to see him die, and I saw him die.'
Oliphant said: 'A symbolic sacrifice.'
'To the terrifying god of nuclear fission? I thought one of you might say that, Sergeant. That was the vulgar reaction. It's altogether too crude and histrionic. All he wanted, for God's sake, was the quickest way to break his neck.' He paused, seemed to consider, then went on: 'Suicide is an extraordinary phenomenon. The result is irrevocable. Extinction. The end of all choice. But the precipitating action often seems so commonplace. A minor setback, momentary depression, the state of the weather, even a poor dinner. Would Toby have died if he'd spent the previous night with me instead of alone? If he was alone.'
'Are you saying that he wasn't?'
'There was no evidence either way and now there will never be. But then the inquest was remarkable for the lack of evidence about anything. There were three witnesses, myself and two others, to the way he died. No one was near him, no one could have pushed him, it couldn't have been an accident. There was no evidence from me or anyone else about his state of mind. You could say that it was a scientifically conducted inquest. It stuck to the facts.'
Oliphant said quietly: 'And where do you think he spent the night before he died?' 'With her.' 'On what evidence?'
'None that would stand up in a court. Only that I rang him three times between nine and midnight and he didn't reply.'
'And you didn't tell that to the police or the coroner?'
'On the contrary. I was asked when I'd last seen him. That was in the canteen on the day before he died. I mentioned my telephone call, but no one regarded it as important. Why should they? What did it prove? He could have been out walking. He could have decided not to answer the phone. There was no mystery about how he died. And now, if you don't mind, I'd like to get out of here and on with cleaning that bloody engine.'
They walked in silence back to the car. Rickards said: 'Arrogant bastard, isn't he? He made his view brutally plain. No point in trying to explain anything to the police. He can't say why without being offensive. You bet he can't. We're too thick, ignorant and insensitive to understand that a research scientist isn't necessarily an unimaginative technocrat, that you can be sorry a woman is dead without necessarily wishing her alive again, and that a sexually attractive boy might actually be prepared to go to bed with either sex.'
Oliphant said: 'He could have done it if he used the engine at full power. He'd have had to come ashore north of where she bathed and kept to the tide line, or we'd have seen his footprints. It was a thorough search, sir, at least a mile north and south. We identified Mr Dalgliesh's prints but, otherwise, the upper beach was clean.'
'Oh yes, he'd have kept pretty clear of the killing ground.
But he could have beached the inflatable dinghy on shingle without much problem. There are stretches which are practically all pebbled, or with narrow strips of sand which he could leap over.'