twelve o'clock
`` Then you have discovered nothing new during your absence ? '' `` Yes , I have found the missing half of the envelope which contained General Darrington 's will ; but ask me no questions at present . For her sake , I must work quietly . Send me a note at twelve o'clock , that I may know her exact condition , and the opinion of the doctor . Has nothing been heard from Dyce ? '' `` As far as I know , not a syllable . '' They shook hands , and once more Mr. Dunbar sprang into his saddle .