four o'clock
Mark opened his letter . It was from the lady of the tree -- only a few lines -- an invitation to tea that afternoon at the house behind the great wall . Twice he read it over . `` Dear Mr. Griffin : Monsignore is coming to tea at four o'clock to-day . Wo n't you come with him ? He likes you -- that I know -- and he always looks lonesome when he comes alone , with only two women to talk to . Sincerely , Ruth Atheson . ''