twelve o’clock
`` This is certainly very novel , '' said he . `` I thought it would please you . But I have not got to the end yet . Dr. Barnicot was due at his surgery at twelve o'clock , and you can imagine his amazement when , on arriving there , he found that the window had been opened in the night and that the broken pieces of his second bust were strewn all over the room . It had been smashed to atoms where it stood . In neither case were there any signs which could give us a clue as to the criminal or lunatic who had done the mischief . Now , Mr. Holmes , you have got the facts . ''