from previous-

-then he  heard  someone  speak  from somewhere  he  could  not  realise  from which  direction  the  man  following  him left  the  professor  there  and  turned  to  go  back,  seconds  later  the  door  opened  by itself,  the  voice  again instructed  him to  enter  the  gate, without  any  hesitation he  stepped  forward   and  the  door  shut  behind  him
-it  was  a  large  room  with  so  many  file  cabinets  standing  in rows  full of  files, the  walls  were  decorated  with  paintings, there  just  in the  middle  was  a  glass  top  office  table occupying  quite  some  room behind  which  on a  revolving  chair  sat  a  large  man