It was unlikely that she would dare to say that she had not been to Baskerville Hall if she really had been, for a trap would be necessary to take her there, and could not have returned to Coombe Tracey until the early hours of the morning. Such an excursion could not be kept secret. The probability was, therefore, that she was telling the truth, or, at least, a part of the truth. I came away baffled and disheartened. Once again I had reached that dead wall which seemed to be built across every path by which I tried to get at the object of my mission. And yet the more I thought of the lady’s face and of her manner the more I felt that something was being held back from me. Why should she turn so pale? Why should she fight against every admission until it was forced from her? Why should she have been so reticent at the time of the tragedy? Surely the explanation of all this could not be as innocent as she would have me believe. For the moment I could proceed no farther in that direction, but must turn back to that other clue which was to be sought for among the stone huts upon the moor.