How did Kangna know that Madhav is with Delhi family or Ajmer family whatever.
How connection was developed between KK and Kangna?
Why she was called khooni dulhan?
How kk fed himself? Who gave him money? Why it took him so long to plot? How did he bring up khushi singlehandedly?
While all the other characters like Ravish, Atharva, Guddi, Suman have no undisclosed secrets, only KK and Kangna have no clearcut details.