midnight
`` To none . '' `` That is well ; we can work best alone . Now listen . At midnight , Master Wayland , a boat , prepared for the trip , will await you , hidden under the ruins of the Agency building . The river flows under the flooring deep enough for the purpose , and I will place the boat there with my own hand . Beyond that , all must rest upon your own skill and good fortune . You will wait here , '' and he glanced about anxiously for some means of concealment , `` lying behind those robes yonder , until the hour . ''