Afghan Bound — Henry Morgan

'Now then, my little temptress. I want you to perform oral sex on me. Have you ever done it before?'
She knelt between his feet, a hot blush upon her cheeks. 'No... never.'
'Never, master,' he insisted, letting her feel the tawse across her raised bottom. 'Never, master.'
She felt a tear rise but forced it away. She wouldn't let him break her. She wouldn't give him the satisfaction of seeing her crying. 'Never... master,' she whispered.
'Good. You may begin.'

Involved in voluntary medical work abroad, David Harper finds himself caught up in the Afghanistan war, and his adventures there bring him in close contact with the cruel treatment of prisoners.
Escaping death by inches he finds himself in Pakistan, where he witnesses captured slaves displayed for pleasure in a nightclub and learns that, properly trained, women can find immense pleasure too.

Returning to England he is introduced to submissive women, and sells his share in a medical practice to create a training centre. All is going very well - until one particular woman turns the tables on him...