That means he went to cross the river, and he could only do so at slack of tide, which should be something before one o'clock. That he went south has a meaning for us. He is as yet only suspicious, and he went from Carfax first to the place where he would suspect interference least. You must have been at Bermondsey only a short time before him. That he is not here already shows that he went to Mile End next. This took him some time, for he would then have to be carried over the river in some way. Believe me, my friends, we shall not have long to wait now. We should have ready some plan of attack, so that we may throw away no chance. Hush, there is no time now. Have all your arms! Be ready!” He held up a warning hand as he spoke, for we all could hear a key softly inserted in the lock of the hall door.