“The case has certainly some points of interest,” you say. “May I ask, in the first place, Mr. McFarlane, how it is that you are still at liberty, since there appears to be enough evidence to justify your arrest?”

“I live at Torrington Lodge, Blackheath, with my parents, Mr. Holmes; but last night, having to do business very late with Mr. Jonas Oldacre, I stayed at a hotel in Norwood, and came to my business from there. I knew nothing of this affair until I was in the train, when I read what you have just heard. I at once saw the horrible danger of my position, and I hurried to put the case into your hands. I have no doubt that I should have been arrested either at my City office or at my home. A man followed me from London Bridge Station, and I have no doubt— Great Heaven, what is that?”

It is a clang of the bell, followed instantly by heavy steps uponthe stair. A moment later our old friend Lestrade appears in the doorway.

“Mr. John Hector McFarlane?” says Lestrade. “I arrest you for the willful murder of Mr. Jonas Oldacre, of Lower Norwood.”

McFarlane turns to us with a gesture of despair, and sinks into his chair once more like one who is crushed.

Don't say anything “Wait!” “Arrest this criminal!”