midnight
It will be better if I do not return today . I fear that even now Rao Khan grows suspicious . The Arab doctor is angered because I have assumed his duties . At midnight , if you listen sharply , you will hear the guard relieved by a new man . Soon after that knock on the door , and when the guard looks in show him the wounded man , who will then feign to be very bad . I sleep in a rear apartment of the palace . The guard will send for me , and I will come .