The baronet's face perceptibly lengthened.

`I hoped that you were going to see me through this business. The Hall and the moor are not very pleasant places when one is alone.'

`My dear fellow, you must trust me implicitly and do exactly what I tell you. You can tell your friends that we should have been happy to have come with you, but that urgent business required us to be in town. We hope very soon to return to Devonshire. Will you remember to give them that message?'

`If you insist upon it.'

`There is no alternative, I assure you.'

I saw by the baronet's clouded brow that he was deeply hurt by what he regarded as our desertion.

`When do you desire to go?' he asked coldly.

`Immediately after breakfast. We will drive in to Coombe Tracey, but Watson will leave his things as a pledge that he will come back to you. Watson, you will send a note to Stapleton to tell him that you regret that you cannot come.'

`I have a good mind to go to London with you,' said the baronet. `Why should I stay here alone?'

`Because it is your post of duty. Because you gave me your word that you would do as you were told, and I tell you to stay.'

`All right, then, I'll stay.'

`One more direction! I wish you to drive to Merripit House Send back your trap, however, and let them know that you intend to walk home.'

`To walk across the moor?'

`Yes.'

`But that is the very thing which you have so often cautioned me not to do.'

`This time you may do it with safety. If I had not every confidence in your nerve and courage I would not suggest it, but it is essential that you should do it.'

`Then I will do it.'

`And as you value your life do not go across the moor in any direction save along the straight path which leads from Merripit House to the Grimpen Road, and is your natural way home.'

`I will do just what you say.'

`Very good. I should be glad to get away as soon after breakfast as possible, so as to reach London in the afternoon.'

I was much astounded by this programme, though I remembered that Holmes had said to Stapleton on the night before that his visit would terminate next day. It had not crossed my mind however, that he would wish me to go with him, nor could I understand how we could both be absent at a moment which he himself declared to be critical. There was nothing for it, however, but implicit obedience; so we bade good-bye to our rueful friend, and a couple of hours afterwards we were at the station of Coombe Tracey and had dispatched the trap upon its return journey. A small boy was waiting upon the platform.