from previous--

johnson reads  a  case file,  he  was  a  big lawyer in town, he  wanted  to  talk to  mrs  samson before  going to bed, she  was  his  old  invalid  neighbour  fond  of  wearing  diamonds, it  was  late  at  night  he  turns  off lights , next  morning  he  gets  ready  to leave  for  office, he  sees  police  cars  surrounded  mrs  samson 's house,  he  asked  what  was  happening , a  neighbour  informed  him that  she  was  killed  last  night, johnson turned  to look in the  direction of  the ladder , it  was  still there