three o'clock in the morning
No doubt only three letters had appeared out of the mysterious darkness , but four letters ought to have appeared , because one of them had appeared not on the date fixed , but ten days later ; and this for a reason which Don Luis knew . Besides , it was not a question of all this . It was not a question of seeking the truth amid this confusion of dates and letters , amid this intricate tangle in which no one could lay claim to any certainty , No ; one thing alone stood out above the situation : the sentence , `` Bear in mind that the explosion is independent of the letters . '' And , as the explosion was put down for the night of the twenty-fifth of May , it would occur that very night , at three o'clock in the morning ! `` Help ! Help ! '' he cried .