His keen hearing had not been mistaken. A man came rapidly round the corner of the house, a short square, thickset man, foreign in appearance. He did not pause but walked steadily on, circling the house and disappearing again.

Anthony nodded to himself.

“Sentry,” he murmured. “They do the thing quite well.”

As soon as he had passed, Anthony went on, diverging to the left, and so following in the footsteps of the sentry.

His own footsteps were quite noiseless.

The wall of the house was on his right, and presently he came to where a broad blur of light fell on the gravelled walk. The sound of several men talking together was clearly audible.

“My God! what double-dyed idiots,” murmured Anthony to himself. “It would serve them right to be given a fright.”