“So you have reached the curious stage?” she asked. “What do you want to know for?”

“Because I think so well of you that I want to do all this sort of thing myself. Who did it?”

She looked thoughtfully out of the window for a moment, and then, as if she had suddenly made up her mind, she turned and said:

“Would it make any difference to you if you knew?”

“Not a bit.”

“Not even if it was someone whom you knew?”

“Not even then.”

When she told him the name it was that of his best friend, the one who was going to be his best man at the wedding.

Here was a complication.

Now you can see what an apparently harmless dinner did.