And yet it cannot be denied that the prosperity of the whole poor, bleak countryside depends upon his presence. All the good work which has been done by Sir Charles will crash to the ground if there is no tenant of the Hall. I fear lest I should be swayed too much by my own obvious interest in the matter, and that is why I bring the case before you and ask for your advice." Holmes considered for a little time. "Put into plain words, the matter is this," said he. "In your opinion there is a diabolical agency which makes Dartmoor an unsafe abode for a Baskerville-that is your opinion?" "At least I might go the length of saying that there is some evidence that this may be so." "Exactly. But surely, if your supernatural theory be correct, it could work the young man evil in London as easily as in Devonshire. A devil with merely local powers like a parish vestry would be too inconceivable a thing." "You put the matter more flippantly, Mr. Holmes, than you would probably do if you were brought into personal contact with these things. Your advice, then, as I understand it, is that the young man will be as safe in Devonshire as in London. He comes in fifty minutes. What would you recommend?" "I recommend, sir, that you take a cab, call off your spaniel who is scratching at my front door, and proceed to Waterloo to meet Sir Henry Baskerville." "And then?"