eight o'clock
`` What sort of a man ? '' `` I could n't exactly say , sir , a servant , a butler , perhaps ; but there was a note for Herr Renwick . '' `` Ah -- give it to me . '' `` My instructions were to deliver it at eight o'clock at Herr Renwick 's residence in the Strohgasse . I have but just returned from there . '' Renwick started down the steps and then turned . `` There was nothing else ? ''