Read it through once

“They were very near doing it for all that. Go where they would about London, I was always at their heels. Sometimes I followed them on my cab, and sometimes on foot, but the former was the best, for then they could not get away from me. It was only early in the morning or late at night that I could earn anything, so that I began to get behindhand with my employer. I did not mind that, however, as long as I could lay my hand upon the men I wanted.