The world was not a black and white place, it was filled with many shades of grey, some so light, they looked pure white, while other shades were so dark that they could be mistaken for being pitch black. That was the way of the world, and Derek had accepted that. An in accepting that, he had also accepted that he could not call himself a good person. No one could call themselves that, and people who did, were normally not good in the least. But now, Derek felt that, not only was he not a good person, he could not be called morally grey.
He was bad, just plain bad.
The reason for that being what he was doing to Emily. She on the other hand he could genuinely call a good person. During her time as his personal assistant, she had never once given him reason to doubt her. She had done her job diligently, most times even going above what was needed. She had earned the right to leave without a hassle.