Khooni Haar-the necklace

the  hallromm in ritz  hotel  was  full of  gaiety  glitter  and mixed  noises  of  drinks  and  laughter  of  men  and  women gathered  there, but  all of  them now  and  then turned  to  look at  the  main entrance, as  if  waiting  for  someone, sten was  already  there  -he  was  the  chief  security  officer  of  the  hotel appointed specially  to  watch over  guests, keep  an  eye  on   everyone"s  activities , the  narrator was  an old  aquaintance  working  for  an insurance  company  , attending  the  party  to  watch  his  target  --the  white   tiger  necklace