"You don't understand," said the girl. "It wasn't social at all. That was just the point of it—that it wasn't social."

She paused a moment, and then went on firmly:

"I came here quite early, and saw him sitting quite alone in the middle of that gallery with the new pictures, that was quite empty then. He had no idea I or anybody was near; he was sitting quite alone, and he laughed."

"Well, no wonder," said Father Brown. "I'm not an art critic myself, but as a general view of the pictures taken as a whole——"

"Oh, you won't understand," she said almost angrily. "It wasn't a bit like that. He wasn't looking at the pictures. He was staring right up at the ceiling; but his eyes seemed to be turned inwards, and he laughed so that my blood ran cold."

The priest had risen and was pacing the room with his hands behind him. "You mustn't be hasty in a case of this sort," he began. "There are two kinds of men—but we can hardly discuss him just now, for here he is."

Captain Musgrave entered the room swiftly and swept it with a smile. Granby, the lawyer, was just behind him, and his legal face bore a new expression of relief and satisfaction.

"I must apologize for everything I said about the Captain," he said to the priest as they drifted together towards the door. "He's a thoroughly sensible fellow and quite sees my point. He asked me himself why I didn't go north and see his old father; I could hear from the old man's own lips how it stood about the inheritance. Well, he couldn't say fairer than that, could he? But he's so anxious to get the thing settled that he offered to take me up in his own car to Musgrave Moss. That's the name of the estate. I suggested that, if he was so kind, we might go together; and we're starting to-morrow morning."

As they spoke Betty and the Captain came through the doorway together, making in that framework at least a sort of picture that some would be sentimental enough to prefer to cones and cylinders. Whatever their other affinities, they were both very good-looking; and the lawyer was moved to a remark on the fact, when the picture abruptly altered.

Captain James Musgrave looked out into the main gallery, and his laughing and triumphant eyes were riveted on something that seemed to change him from head to foot. Father Brown looked round as under an advancing shadow of premonition; and he saw the lowering, almost livid face of the large woman in scarlet under its leonine yellow hair. She always stood with a slight stoop, like a bull lowering its horns, and the expression of her pale pasty face was so oppressive and hypnotic that they hardly saw the little man with the large beard standing beside her.