four A.M.
`` I was , sir . I looked through the grille in the door and saw him lying on the floor of the cell . '' `` What time was it ? '' `` Half-past four A.M. '' `` What did you do ? '' `` I went into the cell and then sent for the head warder . '' `` You realized at once that Samarkan was dead ? '' `` At once , yes . ''