Sherlock Holmes’s prophecy was soon fulfilled, and in a dramatic fashion. At half-past seven next morning, in the first glimmer of daylight, I found him standing by my bedside in his dressing-gown.

“There’s a brougham waiting for us, Watson,” said he.

“What’s the matter, then?”

“The Brook Street business.”

“Any fresh news?”

“Tragic, but ambiguous,” said he, pulling up the blind. “Look at this⁠—a sheet from a notebook, with ‘For God’s sake come at once⁠— P. T. ,’ scrawled upon it in pencil. Our friend, the doctor, was hard put to it when he wrote this. Come along, my dear fellow, for it’s an urgent call.”

In a quarter of an hour or so we were back at the physician’s house. He came running out to meet us with a face of horror.