that looked as if they had not been disturbed for months. The stables
were empty and had been tentatively cleaned out, the coach-house was
vacant, and presented no traces of recent use excepting a half-bald
spoke-brush. We returned up the covered way and I was about to close the
side door, which Thorndyke had left ajar, when he stopped me.

"We'll have another look at the hall before we go," said he; and,
walking softly before me, he made his way to the front door, where,
producing his lamp, he threw a beam of light into the letter-box.

"Any more letters?" I asked.

"Any more!" he repeated. "Look for yourself."

I stooped and peered through the grille into the lighted interior; and
then I uttered an exclamation.

The box was empty.

Thorndyke regarded me with a grim smile. "We have been caught on the
hop, Jervis, I suspect," said he.

"It is queer," I replied. "I didn't hear any sound of the opening or
closing of the door; did you?"

"No; I didn't hear any sound; which makes me suspect that she did. She
would have heard our voices and she is probably keeping a sharp look-out
at this very moment. I wonder if she saw you at the window. But whether
she did or not, we must go very warily. Neither of us must return to the
Temple direct, and we had better separate when we have returned the keys