one
o'clock in the morning
Then suddenly , exerting a surprising amount of strength for so old a man , he put his two hands upon the shoulders of the slightly-built Doctor , and , holding him so , stood looking down at him tauntingly , laughing still . `` You will -- you will prevent ! Monsieur the Doctor , you are a hero . You are alone , you do n't know where , with you do n't know whom ; it is one o'clock in the morning , no one in your household knows where to find you , and yet you will prevent ! You stand in a house where your body might remain undiscovered for years ; but still you defy , you threaten ! By Heaven , my noble physician , you are brave ! '' He loosened his hold and leaned against the improvised table , laughing still in the same suppressed manner , and glancing at the young man , who replied to this dreadful mirth with a sarcastic smile .