6:30
He is coming up to London , on some quest or other , no one knows what it is , Erle is so very mysterious about the whole thing . '' `` Oh , indeed , '' rather faintly ; `` and you -- you are to meet him , Mr. Trafford ? '' `` On the contrary , I am going to do nothing of the kind , '' he returned , imperturbably . `` I told Erle that at 6:30 , the time the train was due , I was booked for a pressing engagement . I did not mention the engagement was with my mother , and that I should probably be partaking of a cup of tea ; but the fact is true nevertheless . '' Crystal did not answer ; perhaps she could not . He was coming up to London , actually to Belgrave House , and on this very evening .