After giving memorable performances in movies like Kahaani and The Dirty Picture, Vidya Balan is back with her much awaited movie `Bobby Jasoos`. Balan playing a female amateur Hyderabadi detective eager to crack a mystery, will be seen in 22 different avatars and reportedly had given 122 look tests for the movie. Produced under Dia Mirza and fiance Sahil Sanhga`s production banner, Born Free Entertainment, Bobby Jasoos will hit the theatres on July 4. Vidya Balan launched the trailer of `Bobby Jasoos` at an event in Mumbai.