four in the afternoon
`` Anyhow , I 'm glad you 're here , '' Dunn said . `` I was wondering how to get in touch with you . Well , this is Deede Dawson 's plan in brief . Tomorrow , at four in the afternoon , Rupert Dunsmore is to be killed -- and I 've undertaken to do the deed . '' `` What do you mean ? '' exclaimed Walter , starting . `` I 've promised that if Deede Dawson will bring me face to face with Rupert Dunsmore , I 'll murder him , '' answered Dunn , laughing softly .