But Holmes drew back. "Thank you, sir. I'd rather not, sir."

Bertrand's brows went up. "How? But we are friends, no?" he questioned.

"I don't know, sir," said Holmes, respectful but firm. "Anyhow, I'd rather not, sir."

"Eh bien!" The Frenchman shrugged his shoulders and turned. "Adieu, Holmes!" he said.

"Good-day, sir!" said Holmes.

He stood in the middle of the room till Bertrand had gone, then with an expressionless face he betook himself to the door of Aunt Philippa's room.

Here he knocked again, and, receiving Mrs. Forest's permission to enter,
presented himself on the threshold. "I have come to say, madam, that Mrs.
Mordaunt is in the garden under the old yew," he announced deferentially.
"Will you be good enough to join her there?"

Aunt Philippa, in the midst of her own preparations for departure, received the news with considerable surprise. It was not Chris's custom to send her messages of any description. The summons fired her curiosity; but her dignity would not allow her to hasten overmuch to answer it.

"I will be with Mrs. Mordaunt in a few minutes," she said.

And Holmes departed, impassive still but with a mind uneasy. He wished with all his soul that the master had not chosen to absent himself that morning. Perhaps he was unreasonably nervous, but there seemed to be tragedy in the very air.