"It was quite easy to make," said Polton, "to a man accustomed to work in metal."
"Which," added Thorndyke, "is a fact of some evidential value."
At this moment a hansom drew up outside. A moment later flying footsteps were heard on the stairs. There was a furious battering at the door, and, as Polton threw it open, Mr. Curtis burst wildly into the room.
"Here is a frightful thing, Marchmont!" he gasped. "Edith—my daughter—arrested for the murder. Inspector Badger came to our house and took her. My God! I shall go mad!"
Thorndyke laid his hand on the excited man's shoulder. "Don't distress yourself, Mr. Curtis," said he. "There is no occasion, I assure you. I suppose," he added, "your daughter is left-handed?"
"Yes, she is, by a most disastrous coincidence. But what are we to do? Good God! Dr. Thorndyke, they have taken her to prison—to prison—think of it! My poor Edith!"
"We'll soon have her out," said Thorndyke. "But listen; there is someone at the door."
A brisk rat-tat confirmed his statement; and when I rose to open the door, I found myself confronted by Inspector Badger. There was a moment of extreme awkwardness, and then both the detective and Mr. Curtis proposed to retire in favour of the other.
"Don't go, inspector," said Thorndyke; "I want to have a word with you. Perhaps Mr. Curtis would look in again, say, in an hour. Will you? We shall have news for you by then, I hope."
Mr. Curtis agreed hastily, and dashed out of the room with his characteristic impetuosity. When he had gone, Thorndyke turned to the detective, and remarked dryly: