nine o'clock
But being intent upon my words I did not think of it , nor indeed recognize it till it had disappeared . Now the picture comes back to me curiously clear . It was the face of the Princess Ysolinde . '' `` I am to see her at nine o'clock to-night in the house of the Weiss Thor . '' `` Do not go , I pray you ! '' he said ; `` it is certainly a trap . '' `` Go I must , and will , '' I replied ; `` for it may be to the good of our maiden .