“A purring cat who thinks he sees prospective mice. Some people’s affability is more deadly than the violence of coarser souls. His greeting was characteristic. ‘I rather thought I should see you sooner or later, Mr. Holmes,’ said he. ‘You have been engaged, no doubt by General de Merville, to endeavour to stop my marriage with his daughter, Violet. That is so, is it not?’

“I acquiesced.

“ ‘My dear man,’ said he, ‘you will only ruin your own well-deserved reputation. It is not a case in which you can possibly succeed. You will have barren work, to say nothing of incurring some danger. Let me very strongly advise you to draw off at once.’