The inspector nodded comprehendingly and, with a heart lightened somewhat of its burden, he departed. He had an almost child-like faith in Malcolm Sage.

For half an hour Malcolm Sage sat engrossed in the map of the scene of the maimings. On it were a number of red-ink crosses with figures beneath. In the left-hand bottom corner was a list of the various outrages, with the date and the time, as near as could be approximated, against each.

The numbers in the bottom corner corresponded with those beneath the crosses.

From time to time he referred to the two copies of Whitaker's Almanack open before him, and made notes upon the writing-pad at his side. Finally he ruled a square upon the map in red ink, and then drew two lines diagonally from corner to corner. Then without looking up from the map, he pressed one of the buttons of the private-telephone. "Tims," he said through the mouthpiece.

Five minutes later Malcolm Sage's chauffeur was standing opposite his Chief's table, ready to go anywhere and do anything.

"To-morrow will be Sunday, Tims."

"Yessir."

"A day of rest."

"Yessir!"

"We are going out to Hempdon, near Selford," Malcolm Sage continued, pointing to the map. Tims stepped forward and bent over to identify the spot. "The car will break down. It will take you or any other mechanic two hours to put it right."