"Look here, Inspector!" I demanded, "I was in earnest when I told you I wanted you to find out all you could about the men in the black limousine. I'm sure they had something to do with Mr. Felderson's death. I didn't try to bribe you, nor throw you off the right track. Even though my sister did have a little unpleasantness with her husband, it was no serious difference." I determined to find out just how much Robinson knew. "She was utterly incapable of doing an act like this. What possible motive could she have?" I could see that Robinson was rather impatiently waiting for me to go before continuing his search. "Well, I ain't found out her motive yet. That can wait. It might have been money or jealousy." "Money?" I scoffed. "My sister had plenty; more than she could use. And as for her being jealous of her husband, that is even more ridiculous." The little man eyed me angrily. "I said that the motive could wait. There's no tellin' what a society woman will do. She may have been crazy for all I know. But I ain't, and all your arguin' is just so much time wasted. You think those guys in the automobile done it. I don't. I think your sister done it. You don't. All right, then, you take your road and I'll take mine, and we'll see who comes out ahead." He turned and started back to where he had been hunting when I came up. "May I ask what you expect to find here?" I queried, walking after him. "Sure you can ask," he replied. As he found me following, he turned and snapped: "Say, what the hell are you hangin' around here for, anyway?" "I merely wanted to ask what you had discovered about the men in the black limousine. That's why I stopped." "Well, you've found out, haven't you? _Nothin'_. All right then, you go on into the city and see if you can find out anything more!" I walked on down the sloping bank, searching the ground to see if I could find the gun that might reveal so much. I could feel the eyes of the inspector boring into my back. "What are you looking for?" he demanded. "A cuff-link," I answered easily. "I think I lost one here last night. You didn't happen to find it, did you?" "A cuff-link? Humph!" he grunted. "No, I haven't found it, but I wouldn't be surprised if I was lookin' for that same cuff-link." All this time I was searching the bank with my eyes. A scrubby, little bush overhung the creek and I kicked at it with my foot. There was a "plopp" as though something heavy had dropped into the water. Instinctively I knew it was the object for which we were both searching, and I turned to find the inspector eying me quizzically. "What was that noise?" "What noise?" I asked.