“You must let me speak,” said the woman, in an imperative voice, and her face contracted as if in pain. “When he had fallen I rushed from the room, chose the wrong door, and found myself in my husband’s room. He spoke of giving me up. I showed him that if he did so, his life was in my hands. If he gave me to the law, I could give him to the Brotherhood. It was not that I wished to live for my own sake, but it was that I desired to accomplish my purpose. He knew that I would do what I said - that his own fate was involved in mine. For that reason, and for no other, he shielded me. He thrust me into that dark hiding-place - a relic of old days, known only to himself. He took his meals in his own room, and so was able to give me part of his food. It was agreed that when the police left the house I should slip away by night and come back no more. But in some way you have read our plans.” She tore from the bosom of her dress a small packet. “These are my last words,” said she; “here is the packet which will save Alexis. I confide it to your honour and to your love of justice. Take it! You will deliver it at the Russian Embassy. Now, I have done my duty, and- -”

“Stop her!” cried Holmes. He had bounded across the room and had wrenched a small phial from her hand.

“Too late!” she said, sinking back on the bed. “Too late! I took the poison before I left my hiding-place. My head swims! I am going! I charge you, sir, to remember the packet.”