midnight
If Bell had made any discovery he kept the fact rigidly to himself . `` Looks very young , '' he muttered . `` But then he is one of those men who never grow any hair on their faces . Young as he looks , I should judge him to be at least forty-five , and , if I am not mistaken , he is a man who has heard the chimes at midnight or later . I 'm quite satisfied . '' `` It 's more than I am , '' Cross said , when at length he and his visitor were standing outside together . `` Look here , Bell , you 're a great friend of Steel 's , whom I believe to be a very good fellow .