“Before we had time to delve further into the Peter Hay case, however, the Staveley murder occurred. There's no need to go into the whole business; it's fresh in your minds; but I'll tell you the main points that struck me when we'd finished our examination of the scene of the murder. “First, Staveley had banged his wrist and stopped his watch at 11.19. But, of course, that didn't prove he'd been killed at that moment. Second, his clothes were wet under his rainproof; and, he'd been shot through both rainproof and jacket, it must have rained before he was shot. Third, since the car-tracks had gone back on a dry road for a while before the rain came on and made them clearer, Staveley was killed after the car had gone off; and the people in the car weren't mixed up in the actual killing. Fourth, there was only one cartridge-case to be seen—the one on the rock. There was no cartridge-case at the groyne when I searched the place. Besides, that track at the groyne belonged to the man in the car, and he was cleared completely by the rain question. If I was right in my inferences, then the murder must have been committed by one of three people: the woman with the neat shoes, Billingford, _or someone who had left no tracks on the sand_. “The letter we found in Staveley's pocket showed the business; and you worked up the case against them that Mrs. Fleetwood had been to meet him on the previous night at the rock; and, as she was acting in conjunction with a man, there wasn't much trouble in inferring that young Fleetwood might have been on the spot also, as soon as we heard that the Fleetwoods' car had been out all night: You, inspector, jumped to the conclusion that the Fleetwoods were at the back of the business; and you worked up the case against them very convincingly. But, as I told you at the start, the case wasn't sound. I wanted all the data I could get, of course, so I didn't discourage you too much; and you eventually dragged out a lot of interesting material about the events of the night. “Meanwhile, we'd come to a blank end with the Fleetwoods and had turned to Billingford. My impression was that he seemed genuinely surprised by the news of Staveley's murder; but he might have been acting, for all one could tell. What we did get out of him was the general impression that Flatt's cottage was inhabited by a gang of rogues. How many were there? Three, if one took Billingford at face value; four, if one believed the story the claimant blurted out when we questioned him at the cottage.