"Of course I am!" she answered. "Do you think I should wait here--wondering what had happened? We will all go--come and have some coffee, both of you, while we wait for the car." The two followed her into the breakfast-room and silently drank the coffee which she presently poured out for them. She, too, was silent, but when she had left the room to make ready for the drive Mr. Tertius turned to Selwood. "You heard--what?" he asked. "Nothing definite," answered Selwood. "All I heard was that Mr. Herapath was there, and there was something seriously wrong, and would we go down at once." Mr. Tertius made no comment. He became thoughtful and abstracted, and remained so during the journey down to Kensington. Peggie, too, said nothing as they sped along; as for Selwood, he was wondering what had happened, and reflecting on this sudden stirring up of mystery. There was mystery within that car--in the person of Mr. Tertius. During his three weeks' knowledge of the Herapath household Selwood had constantly wondered who Mr. Tertius was, what his exact relationship was, what his position really was. He knew that he lived in Jacob Herapath's house, but in a sense he was not of the family. He seldom presented himself at Herapath's table, he was rarely seen about the house; Selwood remembered seeing him occasionally in Herapath's study or in Peggie Wynne's drawing-room. He had learnt sufficient to know that Mr. Tertius had rooms of his own in the house; two rooms in some upper region; one room on the ground-floor. Once Selwood had gained a peep into that ground-floor room, and had seen that it was filled with books, and that its table was crowded with papers, and he had formed the notion that Mr. Tertius was some book-worm or antiquary, to whom Jacob Herapath for some reason or other gave house-room. That he was no relation Selwood judged from the way in which he was always addressed by Herapath and by Peggie Wynne. To them as to all the servants he was Mr. Tertius--whether that was his surname or not, Selwood did not know. There was nothing mysterious or doubtful about the great pile of buildings at which the automobile presently stopped. They were practical and concrete facts. Most people in London knew the famous Herapath Flats--they had aroused public interest from the time that their founder began building them.