“There is no ‘but.’ I shall see you later, then.”

I returned to King Street. My man John had a friend who worked for a builder, he told me. This friend of his would, he said, arrange everything, and be delighted to. Oh, yes, he had a ladder. He had several ladders. He could bring along single-handed, a ladder the length I wanted, and set it in position.

This was satisfactory. I went to a theatre in order to kill time, for I felt excited and terribly impatient. I had not told Vera of my plan, or Faulkner, or indeed anybody but the policeman.

The builder’s man was punctual to the minute. He had concealed the ladder in Crane’s Court before dark, thinking suspicion might be aroused were he to be seen carrying a ladder through the streets of London in the middle of the night. Two o’clock had just struck, when he crept stealthily into Belgrave Square with the ladder over his shoulder. Acting upon my instructions, he laid it flat upon the pavement. Impatiently I waited. A quarter-past two chimed on some far-distant clock. Still the windows remained in darkness.

Twenty minutes passed... Twenty-five... I began to feel anxious. Would this mysterious visitor not come to-night? That would indeed be a bitter disappointment. Ah!

The light had appeared. It was on the first floor. Now it percolated feebly between the boards covering two windows.

At a signal from me the man picked up the ladder, raised it to a vertical position, then let it rest, without a sound, against the window-sill.

“All right, sir,” he whispered to me.

Restraining my excitement, I began slowly, cautiously, to creep up the rungs.