three o'clock in the morning
`` He did . He relies on the note which M. Weber found in a volume of Shakespeare . The explosion is to take place to-night . '' `` At three o'clock in the morning ? '' `` At three o'clock in the morning -- that is to say , in less than a quarter of an hour . '' `` And do you propose to remain , Monsieur le Préfet ? '' `` What next , Sergeant ?