This room, in which George Travers spent most of his time, was of medium size, with French windows opening upon the lawn, and lined from floor to ceiling with books, while the centre was occupied by a large writing-table, littered with papers.

Beside the table, with blanched face upturned to the green-tinted light of the reading-lamp, lay the corpse of my brother-in-law, while from a wound in his neck the blood had oozed, forming a great dark pool upon the carpet.

It was evident that he had fallen in a sitting posture in the chair when the fatal blow had been dealt; then the body had rolled over on to the floor, for in the position it had been discovered it still remained.

The crime was a most remarkable one. George Travers had retired to do some writing shortly before eight o’clock, leaving his father and his wife together in the drawing-room, and expressing a wish not to be disturbed.

At ten, old Mr Travers, who was about to return home, entered the room for the purpose of bidding his son good-night, when, to his dismay, he found him stabbed to the heart, the body rigid and cold. The window communicating with the garden stood open, the small safe had been ransacked, the drawers in the writing-table searched, and there was every evidence that the crime was the deliberate work of an assassin who had been undisturbed.

No sound had been heard by the servants, for the murderer must have struck down the defenceless man at one blow.

Entrance had been gained from the lawn, as the detectives found muddy footprints upon the grass and on the carpet, prints which they carefully sketched and measured, at length arriving at the conclusion that they were those of a woman.

They appeared to be the marks of thin-soled French shoes, with high heels slightly worn over.

Beyond this there was an entire absence of anything that could lead to the identification of the murderer, and though they searched long and diligently over the lawn and shrubbery beyond, their efforts were unrewarded.

It was dawn when I returned home, and having occasion to enter the kitchen, I noticed that on a chair a pair of woman’s shoes had been placed.