Read it through once

“Ay, bodies, Watson. We should be rich men if we had £ 1000 for every poor devil who has been done to death in that den. It is the vilest murder-trap on the whole riverside, and I fear that Neville St. Clair has entered it never to leave it more. But our trap should be here.” He put his two forefingers between his teeth and whistled shrilly—a signal which was answered by a similar whistle from the distance, followed shortly by the rattle of wheels and the clink of horses’ hoofs.