The police search of the house and grounds at Dulwich Grange, Mr. Rennett's residence, occupied the whole of the morning, and neither Rennett's nor Jack's assistance was invited or offered.
Before luncheon Inspector Colhead came to the study.
"We've had a good look round your place, Mr. Rennett," he said, "and I think we know where the deceased hid himself."
"Indeed!" said Mr. Rennett.
"That hut of yours in the garden is used, I suppose, for a tool house. There are no tools there now, and one of my men discovered that you can pull up the whole of the floor, it works on a hinge and is balanced with counter-weights."
Mr. Rennett nodded.
"I believe it was used as a wine cellar by a former tenant of the house," he said coolly. "We have no cellars at the Grange, you know. I do not drink wine, and I've never had occasion to use it."
"That's where he was hidden. We found a blanket, and pillows, down there, and, as you say, it has obviously been a wine cellar, because there is a ventilating shaft leading up into the bushes. We should never have found the trap, but one of my men felt one of the corners of the floor give under his feet."
The two men said nothing.
"Another thing," the detective went on slowly, "is that I'm inclined to agree that Meredith did not commit suicide. We found footmarks, quite fresh, leading round to the back of the hut."
"A big foot or a little foot?" asked Jack quickly.
"It is rather a big foot," said the detective, "and it has rubber heels. We traced it to a gate at the back of your premises, and the gate has been opened recently--probably by Mr. Meredith when he came to the house. It's a queer case, Mr. Rennett."
"What is the pistol?"
"That's new too," said Colhead. "Belgian make and impossible to trace, I should imagine. You can't keep track of these Belgian weapons. You can buy them in any shop in any town in Ostend or Brussels, and I don't think it is the practice for the sellers to keep any record of the numbers."
"In fact," said Jack quietly, "it is the same kind of pistol that killed Bulford."
Colhead raised his eyebrows.
"So it was, but wasn't it established that that was Mr. Meredith's own weapon?"
Jack shook his head.