'You know, you kind of get to enjoy being on the receiving end of this sort of attention. It just takes time to come to turns with how you really feel.'

'So you reckon she's enjoying this?' Basil laughed.

Vanessa grinned at Basil as she set to work on their victim's other leg.

'Oh sure, she'll be turned on big time by this.'

Vanessa clipped one end of a strap to an anklecuff, loosened off the strap until it was fully extended, then she clipped the other end to the brass ring at the corner of the bed. Vanessa then dealt with the second strap in the same way and once both straps were clipped in place, Basil swung his lithe frame from pinning Zoe's legs and he stood up.

'Cool. Okay Vanessa, you do her left leg, I'll do her right.'

Simultaneously they picked up the leather straps and pulling hard on them with both hands they tightened them, forcing Zoe's legs abruptly apart. A second later and the straps were buckled and Vanessa was looking down with a broad grin on her face as she saw the other girl pulling helplessly against the straps. Try as Zoe might to close her legs, they were now held widely spread.

'Arms next.'

'Agreed.'

They unroped the girl's arms, removed her T-shirt and fastened wristcuffs upon her. Vanessa thrilled to the feel of the girl struggling under her as she sat astride her waist, pinning her arms. She knew so well what it felt like and while a part of her wished that she was on the receiving end of the treatment, she was enjoying herself immensely.

With the wristcuffs clipped to the straps, Basil drew the leather straps taut and Zoe's arms were stretched above her head. Vanessa stroked the girl's chest, circling her breasts with one fingertip, brushing her fingernail against her nipples until they stood to attention for her.

'I'd best go and help Auda cast off, he'll be wondering what we're getting up to. You'd better come with me,' Basil announced.

Vanessa followed the young man from the cabin. As she drew the door closed behind her she paused to watch Zoe wriggling on the bed, testing the restraints they'd secured her with. She could barely flex her arms or move her legs; her limbs were drawn so taut. Vanessa could see all her muscles straining against the tight straps. The girl's dark hair was spread across the white cotton sheet as she tossed her head from side to side, gazing despairingly at the tight leather cuffs around her slender wrists. The silk gag that was tight across her mouth was soaked with saliva. She was gasping and sighing as she writhed helplessly. Vanessa knew just how Zoe felt; a heady mixture of fear and arousal, Vanessa had never experienced anything so intoxicating or addictive. She gazed at Zoe and felt a sharp pang of jealousy.

Trapped in the cabin Zoe had no way of knowing where they were or what time it was. She could just feel the movement of the boat and guessed they had been sailing for a couple of hours when she glimpsed the curve of a hill through the cabin window. The gentle thrumming of the powerful engines diminished. Palm trees came into view as the boat drew closer to the land. Then it felt as if it had weighed anchor.

She had been left alone for nearly all of this time. The young man had returned briefly to remove the silk scarf that had gagged her and had given her a drink of mango juice. Then she'd been left to lie and contemplate her fate. Mercifully he'd slackened the straps that held her outstretched, so she could at least flex her arms and move her legs a little. Curiously, she was not as afraid of her fate as she imagined she perhaps ought to be. Maybe, having coped with the ordeal of being Stonefield's prisoner in the tower, she'd come to terms with what suffering might now lie in store for her.

'Wakey, wakey.'

Zoe opened her eyes with a start and saw Vanessa staring down at her. The girl then sat herself down on the foot of the bed and appraised her prisoner, smiling with satisfaction as Zoe instinctively tried to close her legs as she reached to touch her sex.

'You know,' Vanessa spoke slowly, thoughtfully, 'I can't help wondering just now, which of us is the more aroused?'

Vanessa's hand moved over Zoe's leg, her fingertips stroking up her thigh towards the dark thatch of soft hair that spread around her sex. Zoe's attempt to deny how she felt dissolved at the first delicate touch of the other girl's fingertips against her vulva, which to her shame was swollen and slick with arousal.

'Auda has been telling me what he's got in store for you.'

'Uhh... don't...please...' she begged.

'Don't tell me that doesn't feel nice?' Vanessa teased.

'Get your hands off me!'

Zoe drew her legs together as much as the slackness of the straps permitted, glaring defiantly at the girl reaching over her defenceless body.

'Okay then,' Vanessa smiled, 'if it makes you feel better, I'll make it impossible for you to stop me.'

Zoe sighed as the straps that held her were pulled taut, spreading her legs forcibly wide. The tension in her thighs was acute and Zoe groaned as a hot ache in her sex grew. She found herself craning her head and gazing down at her tethered body and the sight of her own helplessness she found deeply arousing.

'Now, where had we got to?' Vanessa asked dreamily.

Zoe shook her head, sighing as the other girl's fingertips resumed their teasing exploration of her sex. Delicately the folds of her vulva were drawn open and she moaned feverishly.

'Oh yes, I was going to tell you about what Auda had planned for you. Well, it's simple really; he's going to auction you on the open market as a sex slave, then he'll give the money he makes towards the rebel cause in El-Saram. Did you know that there was an international black market for girls like us?'

'I'd heard it existed...' Zoe sighed, the tension in her arms and legs making her eyes smart with pain which contrasted exquisitely with the delicious ache in her pussy.

'Auda's going to sail us to Karunga, on the African coast. There's a thriving market there for the white slave trade. The military ruler is corrupt as hell so he encourages the market and takes a cut of the profits. Something for you to look forward to Zoe.'

Zoe no longer cared what the other girl was saying. Her back arched responsively, her arms twisting against the restraints as a skilled finger stroked and coaxed her to orgasm. She sighed, moaning louder then closing her eyes and biting down hard on her lower lip as Vanessa stroked her, teasing her until she ached unbearably.

'Feels good, doesn't it?'

'Uh, huh...'

'That's it Zoe, just enjoy it...'

Zoe sighed, closing her eyes as the delicious feeling between her legs increased. She felt Vanessa's fingers slide right into her sex then slowly twist before withdrawing.

'We're going to take some photos of you looking your best Zoe and we'll shoot a little film. Then they'll be uploaded onto the Internet to a secret website. Then whoever fancies you can bid at an auction and we'll see how much money you'll raise for those poor rebels back in El-Saram.'

Zoe opened her eyes and gazed at the blonde girl sitting over her, stroking so calmly but so skilfully between her legs.

'But how can you condone it?' Zoe asked, struggling to keep her thinking clear despite how dizzily aroused the other girl had made her.

'Oh come on, it's not that bad. I've leant to be submissive and it's cool. You'll learn to enjoy it sooner or later.'

'No, never...'

'Never?' Vanessa smiled, 'That's a very long time, Zoe. A very long time to fight against what's probably a basic instinct. Now, there's an El-Saram naval patrol boat out there, so we just have to wait here for a while. Auda's picked it up on the radio, so he's tucked us into a little bay in amongst some islands until it goes past. You've learnt how to wait haven't you?'