It did not move, any more than mine did.

This was significant, and I turned.
A man stood at my back--not looking at me but at the fellow in front of us.

A quiet "hush!" sounded in my ear, and again I stood still.

But only for an instant.
The man at the fence--aroused by my movement, perhaps--had turned, and, seeing our two figures, started to fly in the opposite direction.
Instinctively I darted forward in pursuit, but was soon passed by the man behind me.

This caused me to slacken; for I had recognised this latter, as he flew by, as Sweetwater, the detective, and knew that he would do this work better than myself.
But I reckoned without my host.