Gregor did all the housekeeping and management. Duchlanâs wife was treated, from beginning to end, like a visitor. Goodness knows how she endured it.â
âWas there much talk about the arrangement?â
âAny amount, of course. But nobody could interfere. People older than myself have told me that they saw the poor girl wilting before their eyes. I believe one woman, the wife of an old laird, did actually dare to suggest that it was high time a change was made. She was told to mind her own business. By all accounts Mrs. Gregor was splendidly loyal to her husband and wouldnât listen to a syllable of criticism or even of sympathy. But I havenât a doubt, all the same, that the strain undermined her constitution.â
Dr. Hailey passed his hand over his brow.
âWhat did she die of?â he asked.
âDiphtheria, I believe. She died very suddenly.â
Dr. Hailey spent the afternoon in a hammock, turning over the details of the mystery in his mind. He did not disguise from himself that he was disappointed at not having been allowed to attempt a solution; on the other hand such ideas as he had evolved offered no substantial basis of deduction. He discussed the subject again with his host after dinner but obtained no enlightenment.
âIâve no doubt,â John MacCallien said, âthat Dundas has exhausted all such probabilities as secret doors and chambers. He was prepared, I feel sure, to tear the castle to pieces to find one clue. My friend the postman had it from Angus, Duchlanâs piper, that he found nothing. There are no secret chambers, no passages, no trap-doors.â
âAnd no other means by which the murderer can have entered the bedroom or escaped out of it?â
John MacCallien raised his head.
âWe know that he did enter the bedroom and did escape out of it.â
âExactly. And miracles donât happen.â
The doctor took a pinch of snuff. âThis is the fourth time that Iâve encountered a case in which a murder was committed in what seemed like a closed room or a closed space. I imagine that the truth, in this instance, will not be more difficult to discover than in these othersââ
A smile flickered on his lips.
âMost of the great murder mysteries of the past half-century,â he added, âhave turned either on an alibi or on an apparently closed space. For practical purposes these conditions are identical, because you have to show, in face of obvious evidence to the contrary, that your murderer was at a given spot at a given moment. That, believe me, is a harder task than proving that a particular individual administered poison or that an apparent accident was, in fact, due to foul play.â
He broke off because they heard a car driving up to the door. A moment later Dr. McDonald came limping into the room.
âYouâve got your terms, Hailey,â he said as he shook the doctorâs hand. âDundas owns himself beaten.â He shook hands with John MacCallien, and then turned back to Dr. Hailey. âCan you possibly come to Duchlan to-night?â
Chapter X
âDuchlan Will Be Honouredâ
Inspector Dundas received the two doctors in his bedroom, a large room situated near that formerly occupied by Miss Gregor and directly overlooking the burn. He was seated on his bed, when they entered, writing notes, and wore only a shirt and trousers. But he did not seem to be feeling the heat.
âItâs good of you, Dr. Hailey,â he said in grateful tones, âbecause I wasnât as polite as I might have been at our first meeting. Pride cometh before a fall, eh?â
âOn the contrary, I thought your attitude entirely unexceptionable.â
The doctor sat down near the open window and mopped his brow. Dundas, he perceived, had lost his air of assurance. Even his sprightliness of manner had deserted him. The change was rather shocking, as indicating a fundamental lack of