Merrington lacked the subtle and penetrative brain of a really great detective, but he possessed energy, initiative, and observation. These qualities had stood him in good stead before, but in this case they had brought nothing to light. The mystery and meaning of the terrible murder of the previous night were no nearer solution than when he had arrived to take up the case, ten hours before. The most baffling aspect of the crime to him was the apparent lack of motive and the absence of any clue. In most murders there are generally some presumptive clues to guide those called upon to investigate the crime--such things as finger-prints or footprints, a previous threat or admission, an overheard conversation, a chance word, or a compromising letter. Such clues may not prove much in themselves, but they serve as finger-posts. Even the time, which in some cases of murder offers a valuable help to solution, in this case tended to shield the murderer. It seemed as though the murderer had chosen an unusual time and unusual conditions to shield his identity more thoroughly and make discovery impossible. The case was full of sinister possibilities and perplexities. It bore the stamp of deep premeditation and calculated skill. As the crime was apparently motiveless, it was certain that the motive was deep and carefully hidden. The only definite conclusion that Merrington had reached was that the murderer would have to be sought further afield, probably in London, where the dead girl had lived all her life. There seemed not the slightest reason to suspect anybody in the neighbourhood, as she was a stranger to the district, and knew nobody in it except Mrs. Weyne, who lived some miles away. It was unfortunate that her husband, who was the only person able to give any information about her earlier life, was too ill to be questioned. On hearing Captain Stanhill's question, Merrington paused abruptly in his impatient pacing of the carpet, and glanced at him covertly from his deep-set little eyes. If he had consulted his own feelings he would have told the Chief Constable that it was not the time to air theories about the crime. But in his present position it behoved him to walk warily and not make an enemy of his colleague. If there was to be an outburst of public indignation because the murderer in this case had not been immediately discovered and brought to justice, it would be just as well if the county police shared the burden of responsibility. Merrington realized that he could best make Captain Stanhill feel his responsibility by taking him fully into his confidence. He was aware that he had practically ignored the Chief Constable in the course of the day's investigations, and it was desirable to remove any feeling that treatment may have caused. Superintendent Merrington had the greatest contempt for the county police, but there were times when it was judicious to dissemble that feeling. The present moment was one of them.