two o'clock
`` I am a friend of Mr. Morris Barnes , '' the voice answered . `` May I apologize for calling you up , but the matter is urgent . Can you tell me if Mr. Barnes is in ? '' `` I am not sure , but I believe he is never in before one or two o'clock , '' Wrayson answered . `` Will you write down a message and leave it in his letter-box ? '' the voice asked anxiously . `` It is very important or I would not trouble you . ''