“Maurice handed Mr. Foss one of the medallions and Mr. Foss took it over to the big central case—the one with the flat top. Then he began to take a rubbing of the medallion with his paper and black stuff. He didn’t seem quite satisfied with his first attempt, so he had a second try at it. As we were watching him, he seemed to prick up his ears, and then he said: ‘There’s some one calling for you, Miss Chacewater.’ I couldn’t hear anything myself; but he explained that the voice was pretty far off. He had extra good hearing, I remember he said. He seemed very positive about it, so I went off to see what it was all about.”
“Was that the last time you saw him?”
“Yes,” said Joan, but she had obviously more to tell.
“And then?”
“As I was going away from the museum door, I met Mr. Foss’s man, Marden. He had a small brown-paper parcel in his hand. He stopped me and asked me if I knew where Mr. Foss was. Something about the parcel, I gathered, though I didn’t stop to listen to him. I told him Mr. Foss was in the museum; and I went on to see if I could find who was calling. I searched about and came across Mr. Clifton; but I didn’t hear any one calling my name. Mr. Foss must have been mistaken.”
“And then?”
Michael Clifton evidently thought it unnecessary that Joan should bear the whole burden of giving evidence. At this point he broke in.
“Miss Chacewater and I were together in the winter-garden when I heard a shout of ‘Murder!’ I didn’t recognize the voice at the time. I left Miss Chacewater where she was and made my way as quick as I could towards the voice. It came from the museum, so I hurried there. I found Foss on the floor with a dagger of some sort in his chest. He was gone, so far as I could see, before I came on the scene at all. The man Marden was in the room, tying up his hand. It was bleeding badly and he said he’d cut it on the glass of a case. I kept him under my eye till I could get a couple of keepers; and then I rang you up at the station.”
“What had become of Mr. Chacewater?” Sir Clinton asked, without showing that he attached more than a casual interest to the question.
“That’s the puzzle,” Michael admitted. “I didn’t see him anywhere in the museum at the moment and I’ve been hunting for him everywhere since then: but he’s not turned up. He may have gone out into the grounds, of course, and left Foss alone in the museum; and possibly he had got out of earshot before the cry of ‘Murder!’ was raised by the valet. I don’t know.”