It would be necessary to arrange his departure from the inn in such a manner as not to arouse suspicion, and also to have the pit watched in case any attempt was made to recover the money he had found that morning. Colwyn, after some consideration, decided to invoke the aid of Police Constable Queensmead. His brief association with Queensmead had convinced him that the village constable was discreet and intelligent. It was still very early as he descended to the village and sought the constable's house. His knock at the door was not immediately answered, but after the lapse of a minute or two the door was unbolted, and the constable's face appeared. When he saw who his visitor was he asked to be excused while he put on some clothes. He was back speedily, and ushered Colwyn into the room in which he did his official business. "Queensmead," said the detective earnestly, "I have to go to Norwich, and I want you to do something for me in my absence. I am going to tell you something in strict confidence. Fresh facts have come to light in the Glenthorpe case. You remember Mr. Glenthorpe's money, which was supposed to have been stolen by Penreath, but which was never recovered. I found it this morning down the pit where the body was thrown." "How did you get down the pit?" asked Queensmead. "I climbed down the creepers as far as they went. I had a rope for the rest of the descent, but it wasn't needed, for I found Mr. Glenthorpe's pocket-book suspended by a cord about ten feet down. Here it is." Queensmead scrutinised the pocket-book and its contents, and on handing it back remarked: "Do you think Penreath returned and concealed himself in the wood to recover these notes?" Colwyn was struck by the penetration of this remark. "No, quite the contrary," he replied. "Your deduction is drawn from an isolated fact. It has to be taken in conjunction with other fresh facts which have come to light--facts which put an entirely fresh complexion on the case, and tend to exculpate Penreath." "I would rather not know what they are, then," replied Queensmead quietly. "It is better I should not know too much. You see, it might be awkward, in more ways than one, if things are turning out as you say. What is it you want me to do?" "I want you to watch the pit on the rise while I am away, chiefly at night. It is of paramount importance that the man whom I believe to be the thief and murderer should not be allowed to escape in my absence. I do not think that he has any suspicions, so far, and it is practically certain nobody saw me descend the pit. But if he should, by any chance, go down to the pit for his money, and find it gone, he would know he had been discovered, and instantly seek safety in flight. That must be prevented." "How?" "You must arrest him." "I do not see how that can be done," replied Queensmead. "I cannot take upon myself to arrest a man simply for descending the pit. It's not against the law."