"Better not," advised the vicar. "It will only cause you much distress."

Leo looked at him in astonishment. What could his aunt have been saying about him or his parents likely to make the vicar take so strong a view of the matter? "If there is anything wrong I have a right to know," he said at length. "I shall insist upon an explanation, Mr Tempest. If I discover any valid reason why I should give Sybil up, I am quite ready to yield. When you next see me, Mr Tempest, I shall either have given up the idea of marrying your daughter, or I shall insist upon marrying her in spite of you and Mrs Gabriel! You cannot say that I am treating you unfairly. I go now."

"But, my dear boy—" called out Mr Tempest, much distressed. He spoke to the empty air. Leo had already left the room and was out of the gate.

After leaving The Nun's House, Leo had taken up his residence at the Colester Arms. Marton was there also, and Leo expected to see him at dinner. He was anxious to tell him what the vicar had said. But the detective did not return from his walk, and after waiting for him till close upon nine o'clock, Leo left the hotel and walked towards the castle to have it out with Mrs Gabriel.

The night was moonless, but there were many stars. Here and there a swathe of mist lay on the plains below; but up on the hills all was comparatively clear. Leo, who knew every inch of Colester, walked slowly out of the town gate and crossed to the other hill. He took a narrow private path which he knew of, wishing to get unobserved to the castle. Just at the foot of this path he met Marton. The recognition was mutual.

"You are going to see Mrs Gabriel?" said the detective.

"Yes. Where have you been, Marton?"

"I have been trying to see her, but she is ill—at least so the butler says. I suspect, however, this is a lie. She doesn't want to see me!"

"Shall I—"

"Yes, you go up. I must return to the hotel and get some dinner. I have been walking and thinking until I am worn out. I'll wait your return, and we can talk over the matter."