Gemma was forcing her down with her foot.
She couldn’t withstand the weight. She felt herself go right under again. Air was escaping from her mouth, bubbling upwards.
This was the pattern of the killings, pressing the victim under until her lungs filled and she drowned.
Her limbs were leaden. Her eyes bulged. She was trying to resist and the strength wasn’t there. Drowning, she knew, places a massive strain on the heart. The shock can be instantaneous. The inrush of cold water to the mouth and nasal passages can cause cardiac arrest. If you survive that, the drowning takes minutes rather than seconds. The struggle to survive is instinctive, but in a small space you can’t battle with someone who has a foot on your shoulder.
She had never known pain like this. Her eardrums felt ready to explode. She tried to hold her breath but the water surged through her nostrils, causing her to gulp more of the foul liquid.
All the time, Gemma’s foot bore down. The bundle of nerves giving so much pain in Jo’s shoulder stiffened. All sensation was going. Every cell in her body screamed for oxygen.
TWENTY-SIX
Sussex and Hampshire police forces combined in the hunt for Gemma Casey. An all units call was broadcast after it was reported that she’d driven away from the Kleentext print works in the unmarked silver Mercedes van owned by the company. Hillie, the sharp-eyed receptionist there, had seen her go. Her yellow Smartcar was still in front of the building.
The shout came at 11.50 a.m. A sighting on the A286 near West Dean. The van was heading north towards Midhurst.
‘She won’t get past Singleton without oars or wings,’ Hen said to Gary. ‘The road’s impassable.’
‘You know what’s up there, don’t you?’ Gary said. ‘She’ll be holed up in the garden centre where her friend Jo works.’
‘You think so?’
‘I reckon she knows we’re closing in.’
‘Leave the reckoning to me and put your foot down. We’re not keeping up.’ They’d left Chichester with two police cars that were powering ahead using their ‘twos and blues.’ One was an armed response vehicle.
‘I can’t get close, guv. They’re kicking up too much spray.’
‘Overtake. They’re only Fords. You’ve got the speed, haven’t you?’
‘Not that much.’
‘Joke, Gary.’
‘Ah.’ He forced himself to smile.
‘Try not to lose them altogether. Why didn’t I think of the delivery van? Sometimes you miss the obvious things. One of the reasons it’s taken me this long to suspect Gemma is the little yellow car she drives. I couldn’t see how she could transport Sally’s body from Bosham to Apuldram in that sawn-off two-seater.’
‘If it were down to me, we’d still be after Jake,’ Gary said. ‘I assumed it was a man all along.’
‘A woman is well capable of holding another woman under water.’
‘Maybe, but she came back and lugged her out and moved her. She had to be strong.’
‘In the first place, Sally was a lightweight, really petite. Then I talked to Stella about the layout at Bosham. The pool is an extension to the house with its own external door, which wasn’t kept locked. Gemma would have backed the van up to it. She seems to have improvised by using the lounger as a trolley. It was on wheels, you see.’
‘Cool.’
‘She is. And I expect the van is equipped with a hand trolley that she put to use at Apuldram.’
‘What put you onto her?’
‘Keep your eyes on the road. It twists a bit up ahead. The breakthrough for me was realising who that invitation was meant for.’
‘Not Meredith Sentinel, but her husband?’
‘Which made it likely a woman had sent it. Imagine the shock it must have been for Gemma when Meredith showed up for the so-called reunion. Instead of her first love, the glamorous young man who initiated her into sex and who she’d dreamed about for years, a woman appears and announces she’s his wife.’
‘So the motive was jealousy?’
‘Raw, green-eyed jealousy. Here was a beautiful, accomplished woman who’d been another member of the dig all those years ago and who’d managed to grab the star prize and marry him.’
‘Not much of a prize, as it turned out,’ Gary said.
‘Gemma didn’t know that. To her, he was still the gorgeous young lecturer of twenty years back, and hers by right. Could you put the wipers on fast speed? I’m losing sight of the others.’
Gary obliged. ‘But why did she drown Fiona? That was a big risk, surely.’
‘To be honest, I don’t know yet. My best guess is that Fiona caught her out. The woman was an obvious enemy, in and out of the office, pushing her aside and cosying up to the boss.’
‘Jealousy again?’
‘Probably not. I think it had to do with the special invitation Gemma had printed.’
‘That was printed at Kleentext?’
‘I’m certain it was. Gemma denied it when we asked, but she would, wouldn’t she? The job was embossed work. It couldn’t have been done on a home computer. A good accountant knows what’s going on in a business, officially and unofficially. Fiona found a proof copy, or the plate it was made from. By questioning Gemma about it, she sealed her fate.’
‘Gemma thought Fiona would blow the whistle on her?’
‘And she would have done, given the chance. Gemma went to Emsworth and waited outside Fiona’s house. The location couldn’t have been better situated for her. The Mill Pond was ideal for another drowning.’
They were touching ninety in the straight stretch leading up to West Dean. The trees close to the road made it seem faster.
‘So it wasn’t serial killing in the usual sense?’ Gary said.
Hen was starting to wish he’d give all his attention to the driving. ‘What do you mean?’
‘Different motives.’
‘Right. The motivation wasn’t the same in Fiona’s case. But the method-the drowning-suggests a serial mentality.’
‘Why did she kill Sally, then? Jealousy again?’
‘Basically. Even she realised that Sentinel was unattainable now. If she pursued him after murdering his wife, her motive would be laid bare and she’d be the obvious suspect, so all that pent-up obsession had to be transferred elsewhere, and Rick was the recipient-to Sally’s cost. Gemma wasn’t willing to share him with another woman. And after killing Sally, she had the neat idea of transporting the body to Apuldram and so bringing Cartwright under more suspicion.’
‘Victim number three.’
‘Or four, or five. Whenever anyone caused Gemma a serious problem she drowned them. Same pattern. She may well have killed others. I know the searches didn’t turn up any, but drowning is a brute to detect. Previous murders could have been dismissed as accidents.’
Hen’s personal radio buzzed. The first response car was in touch. ‘Oscar Six to Bravo One. We’re coming to the garden centre, ma’am, but I don’t see the van outside. Do you want us to make a search? Over.’
‘I’d rather push on.’
‘There isn’t much road left before Singleton.’
‘Where’s the van disappeared to, then? We’ll go right up to where the flood is. She could have stopped there and made a run for it.’
‘Hang on, ma’am. Something is coming towards us.’
‘Stop it, then.’
In the next second she saw headlights and a vast slipstream of spray. She could barely make out the outline, but it was being driven at speed, whatever it was. ‘Block the road,’ she yelled into the radio.
There wasn’t time. The Mercedes van emerged from the spray, snaked past the flashing beacons of the police cars, and headed towards Gary’s small Nissan. Bravely or recklessly he braked, put the car into a skid and turned crosswise to block as much of the road as possible.
Yards away from crashing into them, the van rocked erratically and skidded. Sparks flew from under it. One of the marksmen had got a shot into a tyre. The brakes screamed as the stricken vehicle slid off the road and came to a jolting halt in a ditch not twenty yards from Gary’s car.