We all turned round at the words. There, framed in the doorway, was a tall and beautiful woman—the mysterious lodger of Bloomsbury. Slowly she advanced, her face pale and drawn with a frightful apprehension, her eyes fixed and staring, her terrified gaze riveted upon the dark figure on the floor.

“You have killed him!” she muttered. “Oh, Dio mio, you have killed him!” Then I heard a sudden sharp intake of her breath, and she sprang into the air with a cry of joy. Round and round the room she danced, her hands clapping, her dark eyes gleaming with delighted wonder, and a thousand pretty Italian exclamations pouring from her lips. It was terrible and amazing to see such a woman so convulsed with joy at such a sight. Suddenly she stopped and gazed at us all with a questioning stare.

“But you! You are police, are you not? You have killed Giuseppe Gorgiano. Is it not so?”

“We are police, madam.”

She looked round into the shadows of the room.

“But where, then, is Gennaro?” she asked. “He is my husband, Gennaro Lucca. I am Emilia Lucca, and we are both from New York. Where is Gennaro? He called me this moment from this window, and I ran with all my speed.”

“It was I who called,” said Holmes.

“You! How could you call?”

“Your cipher was not difficult, madam. Your presence here was desirable. I knew that I had only to flash ‘Vieni’ and you would surely come.”

The beautiful Italian looked with awe at my companion.