and continued walking towards the shops and the group of girls from school they'd arranged to meet there.
Josie broke into a sudden sprint. She ran directly at Shona and shoved her in the back between her shoulder blades, knocking her off her feet and down into the long wet grass. She tried to stand but before she could get up Josie kicked her in the stomach. She rolled her over onto her back and whined in pain.
'What the hell are you doing, you silly bitch?'
Josie didn't answer. Instead she simply dropped her knees onto Shona's exposed chest, forcing every scrap of air from her lungs. Shona gagged with surprise and shock as she struggled to breathe in. Stunned and wide-eyed she stared into Josie's face.
'Why did you…?' she began to say. Josie wasn't listening. She'd found a stone half-buried in the mud and grass nearby and was desperately digging her fingers around its edge, trying to pull it out of the ground. Panting with effort she picked up the heavy, brick-sized rock and held it high above her head.
'Josie, don't…' Shona whimpered.
Holding it with both hands, Josie brought the stone crashing down on her friend's chest. She felt her ribs crack and splinter under the force of the undefended impact. In too much sudden pain to scream, Shona groaned in agony and watched helplessly as Josie lifted the stone again and brought it down on her for a second time. She hit her with such savage force that a broken rib punctured one of her lungs. Her breathing became erratic and rasping, then desperately shallow and forced. Her shattered rib cage began to move with sudden, juddering movements as her damaged body struggled to continue to function.
Josie leant down over her dying friend and looked deep into her face. Her skin was ghostly white, smeared with splashes of mud and dribbles of blood which now gurgled and bubbled from the corners of her mouth. Her dark, panic-filled eyes began to glaze over and lose their focus. She was aware of Josie lifting the stone again, but nothing more.
She knew that her friend was dead but Josie had to be certain. She smashed the rock into her face, breaking her left cheekbone and almost dislocating her jaw. Exhausted with effort she rolled away from the corpse and sat panting on the wet grass nearby.
Josie stared at the sprawling dark shadows of the town below her. She couldn't go down there now. She couldn't go home either. She didn't know where she was going to go or what she was going to do. Maybe she could just stay in the park and hope no-one comes looking, she thought. Either that or she'd have to take her chances and just run.
She hadn't had any choice. She'd had to kill Shona. She felt no guilt or remorse for what she'd done, just relief.
4
We're out. We've escaped. For the first time in months Lizzie and I have managed to get away from the house together without any of the children in tow. I can't remember the last time we were out together like this. The fact that we're crammed into a small, dark and sweaty concert hall with six or seven hundred other people doesn't seem to matter. The gig hasn't even started yet but the background music is already deafening and the lighting is virtually non-existent. The chances of us actually managing to speak to each other are slim.
'Doesn't feel right, does it?' Liz shouts at me. She has to lift herself up onto tiptoes to yell into my ear.
'What doesn't?' I shout back.
'Not having the kids here. I'm not used to it. I keep looking round expecting to see at least one of them.'
'Make the most of it,' I tell her. 'How long's it been since we went out together on our own?'
'Months,' she screams, struggling to make herself heard over the noise.
The conversation is over quickly. The effort of having to yell at each other is already making my throat sore and the gig hasn't even