It was always an enjoyable occasion when my work colleagues decided to have a night out in town. We had met up in a bar before moving on to the restaurant. There were twelve of us out that night, most of us worked together in the planning office but there were three from the marketing office - Nick, Sue and Yvette. I had seen Sue and Yvette around the building in the past, but had never spoken to either of them. Yvette ha...