"Can you describe the appearance of the man who placed the box in your hand and the appearance of the thief?"
"No. I told you so before. Both men came and went in a flash, and even if they had waited, it would have been impossible for me to have noticed their dress and looks, as the fog was so thick and the night was so dark."
"Did either man speak?"
"No. Each came and went in silence."
The policemen both in Crook Street and at Hyde Park Corner proved that they had met Patricia and that she had severally asked them the time. Also, the cabman deposed to driving the young lady back to The Home of Art, so, without any difficulty whatsoever, it was proved that Miss Carrol had been absent from the house when the crime had been committed. The Crook Street policeman also swore that he had seen no suspicious people haunting his beat. "And the fog was so thick," ended this witness, "that it would have been difficult to see anyone, unless someone ran into my arms as the young lady did. It was a pea-soup night, sir."
This concluded all the evidence which Harkness was able to get, and after a pause the coroner began his speech. But before he got very far, the door of the drawing-room was hastily flung open and Sammy Amersham the playwright dashed in, holding a dagger aloft.
"It's the stiletto," he cried triumphantly, and clapped it down on the table under the coroner's nose. "When you were asking questions about it, I remembered the unfastened middle window, and wondered if the assassin had opened the same to throw the weapon into the area when he had killed poor Mrs. Pentreddle. I went down and searched, and found it. He must have thrown it out, as I guessed, and then have stepped in to close the window and leave by the front door. There's blood on it, too."
"Is this your stiletto, Mrs. Sellars?" asked the coroner, passing it along.
The woman shuddered as she took it. "It's mine, sure enough," she said. "And there's blood on the handle. Ugh!" she dropped it. "Martha's blood!"
Sammy the playwright was sworn and stated again how he had found the weapon in the area below the iron balcony. "Amongst some rubbish," said Mr. Amersham.