The quiet twilight was still trembling on the topmost ridges of the heath; and the view of London below me had sunk into a black gulf in the shadow of the cloudy night, when I stood before the gate of my mother’s cottage. I had hardly rung the bell before the house door was opened violently; my worthy Italian friend, Professor Pesca, appeared in the servant’s place; and darted out joyously to receive me, with a shrill foreign parody on an English cheer.

On his own account, and, I must be allowed to add, on mine also, the Professor merits the honour of a formal introduction. Accident has made him the starting-point of the strange family story which it is the purpose of these pages to unfold.