Holmes sat for some time lost in thought.
"Who keeps Lady Beatrice Falder company?" he asked at last.
"There is her maid, Carrie Evans. She has been with her this five years."
"And is, no doubt, devoted?"
Mr. Mason shuffled uncomfortably.
"She's devoted enough," he answered at last. "But I won't say to whom."
"Ah!" said Holmes.
"I can't tell tales out of school."
"I quite understand, Mr. Mason. Of course, the situation is clear enough. From Dr. Watson's description of Sir Robert I can realize that no woman is safe from him. Don't you think the quarrel between brother and sister may lie there?"
"Well, the scandal has been pretty clear for a long time."