'I was lying naked, face down and I laughed and pretended to struggle as he spread my legs and bound my ankles and wrists to the bed.
'He gagged me, and that was alright by me too. Then he smacked my bottom and called me a naughty girl. This was going to be a fun night, I thought. But suddenly I was aware that we were not alone.
'There was a big dark figure in the room. His shadow fell over me before I actually saw him. We'd...