Stepping outside the building, he considered how a hypothetical burglar might have forced an entrance. The window frames and doors were all gone; moreover, any marks which might have been made approaching them must long since have been defaced by time and the footprints of sightseers and workmen. French, nevertheless, walked all round the house and about the grounds, looking everywhere in the hope of coming on some clue, though he was scarcely disappointed when his search ended in failure.

He was anxious, if possible, to find out what newspaper had been burned. He did not think the point of vital importance, but on general principles the information should be obtained. There was no knowing what clue it might not furnish. On his way back to Thirsby, therefore, he turned aside to Mr. Oxley’s house and sent in his card.

In the privacy of the solicitor’s study French introduced himself and in confidence declared his mission to the town. He apologised for troubling the other on Sunday, but said that at the moment he wished only to ask one question: Could Mr. Oxley tell him, or could he find out for him from Miss Averill, what daily paper the late Mr. Averill had taken?

Mr. Oxley did not know, and excused himself to interrogate Ruth. Presently he returned to say it was the Leeds Mercury.

Next morning French took the first train to Leeds, and going to the Mercury office, asked to see the files of the paper for the month of September. Commencing at the 15th, the day of the fire, he began working back through the papers, scrutinising each sheet for a paragraph headed “RAT-CATCHER’S F——”

He found it sooner than he had expected. Tucked in among a number of small news items in the paper of Tuesday, 14th September, he read: “RAT-CATCHER’S FATAL FALL.” And when he saw that the type was similar to that on the burnt scrap and the last line of the preceding paragraph was “Mr. Thomas is doing as well as can be expected,” with the “—ng as we—” in the correct position relative to the “RAT-CATCHER’S F——” he knew he had really got what he wanted.

French was extraordinarily thorough. Long experience had taught him that everything in the nature of a clue should be followed up to the very end. He did not therefore desist when he had made his find. Instead he worked on to see if he could identify any of the other scraps he had found. And before he left he had found eight out of the eleven he had mounted, and proved that the burnt papers were those of the 13th, 14th, and 15th; the three days before the fire.

So far, then, the indications were at least for continuing the investigation. Leaving the Mercury office, French walked up the Briggate to Messrs. Carter & Stephenson’s, the makers of the safe. He asked for one of the principals, and was presently shown into Mr. Stephenson’s room. Introducing himself in the strictest confidence in his true guise, he propounded his question: Was the safe absolutely fireproof?

Mr. Stephenson rose and went to a drawer from which he took a number of photographs.

“Look at those,” he invited, “and tell me was the fire at Starvel any worse than those fires?”