is sonia the killer?

hi all!!so who do u think is the killer??i think it's sonia...coz she gave akshat the envelope with s written on it...and lata was thinking about the s.i think kamini knew that sonia fired th bullet and so b4 dying she was trying to tell amber by writing sonia on her hand...she could not write it completely...if lata tells akshat abt the s,i think he would tell and the case would get a li'l solved...wat do u think?

i guess sonia is da killer bcoz of the s on the envelope

i relli doubt simone
i just cant stand tht lady

i know some doubt simone also nut she's not the killer..... don't know why she has been inserted in the serial...and if the killer is sonya or simone....why is tk escapin' away...mayb he's hiding somethin' but what?