Sir Chichester stared. He was more and more out of his depth, and these were waters in which expert swimming was required.

"I don't understand. Do you say that somebody saw Mrs. Croyle after she had dismissed you for the night?"

"Yes, sir."

"Will you please explain?"

The explanation was as simple as possible. Jenny had first fetched a book for her mistress from the library, before the house-party left for the ball. She then had supper and went to Mrs. Croyle's room. It was then about half-past nine, so far as she could conjecture. Her mistress, however, was not ready for bed, and dismissed Jenny, saying that she would look after herself. Jenny thereupon retired to her own bedroom and wrote a letter. After writing it, she remembered that she had not put out the distilled water which Mrs. Croyle was in the habit of using for her toilet. She accordingly returned to Mrs. Croyle's bedroom, and to her surprise found it empty. She waited for a quarter of an hour, and then becoming uneasy, went downstairs into the hall. She heard her mistress and some one else talking in the library. Their voices were raised a little as though they were quarrelling.

"Quarrelling!" Sir Chichester Splay cried out the word in dismay. His hand flapped feebly on the table. "I am afraid to go on.... What do you think, Hillyard? I am afraid to go on...."

"We must go on," said Luttrell quietly. He was very white. Did he guess what was coming, Hillyard wondered? At all events he did not falter. He took the business of putting questions altogether out of his host's hands.

"Was the somebody a man or a woman?"

"A woman, sir."

"Did you recognise her voice?"