'When did headrests make marks like that?' She pointed to the sides of Daniel's neck.

Horton was staring at what looked like blurs on the right and the left almost indistinguishable from the myriad of other bruising. He still couldn't see what she was driving at.

'I've enlarged them on the computer,' she added. And she handed him another image. 'It's quite clear that there are deeper marks either side of that general bruising.'

At last he got it! He was staring at the pressure marks of fingers. His heart was doing somersaults whilst his mind was racing with this new information. He had been right and so too had Mrs Collins.

'Someone pushed his head against the windscreen,' he cried triumphantly.

'Looks like it to me, which means he wasn't alone in that car. Daniel's death was not an accident, it was murder. I'll stake my reputation on that.'

And that was good enough for Horton. Now all Gaye Clayton had to do was find some evidence to say the same for Irene Ebury and her son, Peter.

'Is she sure?' asked Uckfield, later that evening after Horton had told him about Dr Clayton's findings.

Horton lifted his c.o.ke and nodded at Uckfield's sceptical expression. They were sitting in a quiet corner of the bar of the Rudmore Cellars on the edge of the continental ferry port. After studying the photographs again that afternoon and running through his theory until he was happy with it, Horton had gone to Uckfield's office. But Uckfield had forestalled him by suggesting they talk over a swift half in a nearby pub. Horton had been surprised by the invitation. Once having a drink together after work would have been a regular occurrence, but since Horton's suspension on a suspected rape charge and Uckfield's promotion to superintendent, it had been rare. Uckfield's invitation now confirmed Horton's suspicions that Uckfield knew about the Intelligence Directorate's operation and he didn't want anyone else eavesdropping, such as DC Lee who had drawn a blank from her trawl of the antique shops and p.a.w.nbrokers close to where Marion Keynes lived. She appeared stoical about her exploits, but Horton could detect frustration simmering beneath the surface. Tomorrow she would start talking to the relatives of the residents of the Rest Haven.

Horton said, 'Certain. Daniel was plied with drink by his killer and then helped into his

car-'

'Into the pa.s.senger seat?''Yes. The killer then drove the car southwards along the dual carriageway, on to the wharf and into the sea, knowing that it would be high tide and relying on the fact there would be very few people about that late on Christmas Eve.'

'He took a chance on not knocking himself out, or getting seriously injured going over like that?'

'He was wearing a seat belt and braced himself for the impact. He wasn't driving fast. He also had Daniel strapped in. Once underwater, our killer swops places with Daniel; a body is much lighter underwater, and more manoeuvrable.' Horton could see Uckfield eyeing him incredulously over the rim of his beer gla.s.s. 'It might have taken a bit of shoving and pushing, but it can be done.'

'Only if our killer has the lungs of a seal.'

'He was wearing an aqua lung.'

'Wouldn't Daniel Collins have thought it odd this bloke getting into his car wearing an aqua lung?' Uckfield said sarcastically.

'I expect Daniel was too drunk to notice or able to speak, but the killer wasn't wearing the aqua lung then. It was on the back seat of the car. And under his normal clothes the killer was wearing a dry suit. When the car hit the water, our killer holds his breath, releases the seat belt, reaches for his aqua lung and regulator and starts breathing. He then struggles into the apparatus knowing he has to act quickly in case anyone saw the car go into the sea. He swims out through the driver's window and around to the rear pa.s.senger side and into the car. That's what was bothering me about the photographs taken of the car after the incident, I knew there was something odd about it but couldn't work out what. All the windows were open. At first I thought, like Dr Clayton, it was because Daniel wanted some fresh air to help him sober up but it was because the killer needed access.'

Uckfield was shaking his head, but Horton could tell it was in amazement rather than disagreement. 'This is one h.e.l.l of a crafty beggar we're up against.'

'Yes and a meticulous planner.' Horton thought of his conversation with Gary Manners. This fitted him perfectly. Hadn't he said that he was a whizz at organization and health and safety? And this needed a mind that would think through every implication and part of the plan to the last detail. The only flaw was Manners said he couldn't dive any more on account of his illness. But Horton only had his word for that.

He said, 'Our killer manoeuvres Daniel into the driver's seat. If he had left it there, he would have got away with it, but he doesn't know that Daniel Collins is dead, and maybe he's the kind that likes to be doubly-sure. So he thrusts Collins's head against the windscreen and back again to make sure the poor man won't regain consciousness. Then he swims off-'

'Where?'

Horton had been giving that considerable thought. 'There are a number of options. He has a boat nearby and is able to reach it. He climbs in, starts the motor and returns to either Eastney or Hayling Island to the south, where his car is parked. Alternatively, on the high tide, he takes the boat to Broadmarsh to the north and the public slipway there, where he hitches it up to his car and drives away.'

Uckfield sunk some more beer. 'I'll get some officers checking.'

Horton continued. 'Or he could have resurfaced further along the sh.o.r.e to the south

where he comes up on the beach, changes into some clothes he's left there behind a bush on Milton Common, and then walks away, returning later to collect his diving gear.'

'So we need to ask if anyone saw a man walking along the dual carriageway in either direction in the early hours of Christmas morning. I'll give a press conference tomorrow, and before you ask, yes, I told Madeleine that it was over between us.'

'How did she take it?'

'Threatened to make a noise. I told her that when it came to noise I could roar a h.e.l.l of a lot louder than her. It seemed to shut her up. Pity really because I liked her and she was a right little-'

'There is another theory,' Horton interrupted, not wanting to hear about Uckfield's s.e.xual prowess or Madeleine's come to that. 'Our killer took his boat northwards to the sailing centre, next to Oldham's Wharf, where he hitches it to a trailer on the back of his car and drives away, or it could still be there on the sh.o.r.eline. The sailing centre's CCTV doesn't show any cars in the car park that night though.'

Horton could see Uckfield's mind ticking over. He added, 'I've run the details of Daniel Collins's method of death through the ACR and nothing like this shows up locally, though there have been one or two cases of bodies found in cars in other parts of the country. I've asked Trueman to look into them, but I don't think they're connected.'

'So who have we got in the frame for both Collins and Farnsworth's murders?' Uckfield asked sharply.

Horton sat forward. 'Gary Manners. He claims not to dive any more, has a phobia for it on account of the accident with Farnsworth, but we only have Manners' word for that. He says he acts as c.o.xswain on the dives. Manners would have known about the row Farnsworth had with Oldham, so maybe he thought he could implicate Oldham in Farnsworth's death. It's also worth checking to see if Manners has ever visited Oldham's to carry out a health and safety inspection. Perhaps that's where he got the idea from. And he has good cause to hate Farnsworth on account of s.c.r.e.w.i.n.g up his career.' Horton briefly relayed the conversation he'd had with Manners at the crematorium.

'Manners could have lured Farnsworth to the sailing centre with the promise of some information or by threat. The uniformed patrol says they stopped Farnsworth as he was heading that way. Farnsworth was worried at the station in case he was going to be late for his appointment, but Manners hung on for him, perhaps he even saw DC Lee on the radio as we left the sub-aqua club, and guessed we might pull Farnsworth over. Under cover of darkness, Manners kills Farnsworth, then transports him in a boat to Oldham's Wharf where he manages to get Farnsworth ash.o.r.e and throws him in the pit. He then arranges the body to look as though he'd fallen in.'

'Sounds good enough to me. What about Daniel Collins?'

'Manners knew Daniel Collins and had been diving with him on several occasions. Our only stumbling block there is why Manners would want Daniel Collins dead.'

And as far as Horton could see Manners had no connection with the Rest Haven Nursing Home.

'We'll ask him when we bring him in tomorrow morning, nice and early. Nothing like a dawn swoop to get them worried.' Uckfield grinned. 'Dennings can interview him.'

Uckfield must have seen that Horton looked about to protest because he quickly added, 'Manners has already spoken to you so a fresh face, and one as gruesome as Dennings', might frighten Manners into talking.' Uckfield drained his gla.s.s. 'Another?'

'No. I'm off home.'

'The boat, you mean?'

'Yes.' Horton stiffened at Uckfield's sneer.

'Why don't you get yourself a flat?'

'Why should I?'

'You're not still expecting to go back to live with Catherine, are you?'

Horton said nothing.

After a moment Uckfield added, 'Any more news from Catherine about Emma?'

'No.'Uckfield hesitated and Horton thought here it comes maybe this was the real reason we're here drinking like old buddies.

'Look, Andy, what's the sticking point between you and Catherine?'

So that was it? Horton curbed his anger at the thought that Catherine had gone blabbing to her friend Alison Uckfield and Alison had got her husband to do Catherine's dirty work. Once, and not so long ago, Uckfield had thought him capable of hitting Catherine because she had intimated to Alison Uckfield that's where her bruises came from, when it was overactive s.e.x with that oaf she was dating.

Evenly he said, 'The sticking point, as you call it, Steve, is me wanting to spend time with my daughter. I don't think that's much to ask, and I don't mean for an hour every other Wednesday. I want something more permanent than that.'

'But how? In our job that's not always possible. Take this case, for example, or any serious crime. We don't keep office hours and neither do we work to any sodding European Time Directive. If we did the public would get less of us than they already do and the criminals would be laughing behind their murders, mugging and thefts. If you said that you could have Emma every weekend, or even every other weekend, how do you know you won't be called in to help in an investigation or be already deep into one?'

Horton felt panic and fury in equal measures. He knew Uckfield was right and it was what any courtroom judge would say. He was also angry that Uckfield was backing Catherine's point. He could just hear her saying: talk some sense into him, Steve. He'll listen to you. talk some sense into him, Steve. He'll listen to you.

Like h.e.l.l he would! But he remained silent and stayed put because there was more to come, and Horton wanted to know what Uckfield was really driving at.

'I'll be honest with you,' Uckfield said, which rang alarm bells with Horton loud enough to make him deaf because in his experience that always heralded a lie. 'I want you on my team and Dennings off it. He's got the intelligence of a woodlouse and that's insulting the insects.'

Horton tried not to look shocked. Maybe this time Uckfield was was being honest. He hadn't expected this. OK, so it was what he had long been hoping to hear. But why? And especially now? Was Dennings threatening to tell about Uckfield's peccadilloes? No, it had to be more than that. being honest. He hadn't expected this. OK, so it was what he had long been hoping to hear. But why? And especially now? Was Dennings threatening to tell about Uckfield's peccadilloes? No, it had to be more than that.

'How are you going to do that, Steve?' Horton asked quietly, the deaths of Collins and Farnsworth sidelined for a moment.

Uckfield leaned across the low table. 'The Port Special Branch team has a vacancy. It's right up Dennings' street. National security, anti-terrorist role. I've told him that I'll back his application for a transfer, but the b.u.g.g.e.r's sticking. He won't be for long.'

Horton was beginning to get an uncomfortable feeling about this. 'I can hardly see

Dennings shining in an intelligence-gathering role.'

'So he hasn't got your brains, but basic surveillance, undercover work and pitching in with a bit of muscle when needed is what he does very well, and that's what they want. When I get him out I want you on my team, but I can't recommend you for it, and with a possible promotion, if I can't rely on you pulling your weight at all hours and at the drop of a hat. I have to justify it upwards.'

So that was it? Horton's stomach clenched. He felt his body go rigid with anger and he fought to control it. Steadily he said, 'Let me get this clear. I get to be on the major crime team, working with you as a DI-'

'Acting DCI,' corrected Uckfield.

'Acting DCI,' Horton stressed, 'If I give up my right to see Emma.'

'No, nothing like that,' Uckfield rea.s.sured hastily, sitting back, but Horton saw his eyes narrow perceptibly. 'You can still see your daughter. Of course you b.l.o.o.d.y can.'

'When?' Horton kept his voice even. He wanted to know the full facts of this deal and he wanted Uckfield to believe he was considering it.

'When it's convenient to both you and Catherine.'

Horton held Uckfield's stare. 'You mean give up my right of access to Emma and the hope that she can stay with me?'

'Andy, you know what our job's like. We don't work nine to five. You're a good officer. You've got a career ahead of you now all that rubbish about rape is over. Once Dennings is gone, you can step into his shoes. It would be great to have you back working with me. We make a good team, always did.' Uckfield smiled.

Horton thought it was like a poisonous snake telling him its bite wouldn't hurt a bit. He tossed back his c.o.ke, and sc.r.a.ped back his chair. 'I'll think about it.'

'Great.' Uckfield beamed, then frowned. 'But not too long, eh? If I get shot of Dennings, I can't keep postponing his replacement for ever. We need to move swiftly.'

'Right.'

Outside Horton paused to put on his helmet and wait for his racing heart to settle down. Who had put Uckfield up to this? Was it really Catherine? DC Lee's face swam before his eyes and he stared at the dockside cranes beyond the pub. Did they really think they could silence him with threats? But silence him over what, for heaven's sake? He knew nothing. No, this had to be Catherine.

Horton swung the Harley round and slowly made his way on to the motorway slip road where he waited on the hard shoulder. Uckfield was a long time coming out. Perhaps he'd gone for a slash. It was a good five minutes before he appeared. Had he stayed for another drink? Perhaps he'd called Catherine.

Horton moved off before Uckfield reached him. If he sacrificed his right for regular access to Emma would Uckfield really make him acting DCI on his team? He did work late. He would like to have said it was because he had nothing to go home for, but even during his marriage he had worked long hours. And when undercover in Specialist Investigations he'd be gone for days. Catherine was using it as one of the examples of his unreasonable behaviour and grounds for divorce. She was right. He had often wondered if marriage and a police career were compatible, and thought probably not given the high number of divorces. Maybe with the Alison Uckfields of this world, not ambitious, content to wrap her life around her children, church and friends, it didn't matter. But Catherine had been and still was, as ambitious as him. He hadn't been there to share the childcare. That had been left to his mother-in-law and the nursery. With Emma now at school it must be easier for Catherine, but not that easy.

He didn't like to admit it but Uckfield had a point. What would happen when a big case came along and he wanted to be a part of it correction he felt compelled to be part of it. It was what he loved. But he loved Emma too.

He thrust it out of his mind and concentrated on the rain-drenched road until he reached the marina. After his run he still felt pent up. He made himself something to eat whilst worrying away at what Uckfield had said. Was his proposal genuine? Or was it some kind of test to see if he went blabbing to Dennings?

He had no answers and was unlikely to get them. He knew he wouldn't sleep well. There was too much swirling around in his head: along with Collins, Farnsworth and Dennings there was Uckfield's ultimatum. He felt tense and irritable. It was like that sensation just before a storm. Some people experienced headaches and migraine, but with him it was a tightness across his chest and a heightened alertness, as if his whole body was being put in a state of readiness. For what, he had no idea, but sooner or later something was going to break. He only hoped it wasn't him.

SEVENTEEN.

Friday, 7.35 a.m.

'You're early,' Horton said, finding Cantelli already in the CID office the next morning.

Horton had dropped into the major crime suite on his way through the station and had learnt from Trueman that Gary Manners had been brought in at six a.m., and he'd requested a solicitor before being interviewed. Manners was no fool. If he was their killer, then, like the man had said, they were going to have to prove it. There'd be no confession there. Trueman also said that the search warrants for Manners' apartment and the sub-aqua club would be through later that day.

'Couldn't sleep,' Cantelli said.

Snap, thought Horton. He didn't need to ask what had disturbed Cantelli's dreams. Activity would help. It always worked with him, though he knew that it merely postponed the problems and didn't solve them. But he didn't want to think about Emma and that job offer of Uckfield's now. He had a murderer to catch.

Yesterday DC Marsden had returned from Haslemere with the news that Farnsworth had been a highly successful estate agent and had made a mint of money in the London commuter belt in a rising property market. Farnsworth was, Marsden had quoted from his sources, articulate, had lots of nervous energy and people took to him. He was able to fool most of the people most of the time. Horton guessed that fitted the profile of a narcissistic personality disorder. Dennings reported that no will had been found in Farnsworth's house and there was nothing to throw any light on who had killed him and why.

The contents of his house were being searched and his personal papers had been bagged up and Trueman's team were going through them and looking into Farnsworth's finances, which on first glance looked very healthy indeed. DC Marsden had the task of tracking down and interviewing Farnsworth's previous girlfriends, which, Horton thought, might take some time.

By the time he'd brought Cantelli up to date with the events of the previous day, Walters had arrived. He detailed him to find Chalky White, one of their more useful informers, and get him asking around the pubs and clubs to see if Marion or Ian Keynes had been trying to pa.s.s off stolen goods.

Horton handed the case notes on the armed robbery to Cantelli. 'Read through that, Barney, and see if it tallies with your memory. Is there anything missing or does anything strike you as unusual?'

Cantelli took the file. 'About Farnsworth's death don't laugh at this, but it was something that Johnny, my nephew, said to me yesterday about treasure hunting.'

'You mean as in chests with gold sovereigns?' Horton teased.