I have talked about Divorce in Islamic understanding in my Urdu blog in which
I have written in English some aspects about what is called "three Talaq" so please see it there.
My main reason for this reminder is that among Muslims it is generally considered to always utter the word talaq three times instead of just saying one time. Like saying by the Husband (A) "I divorce you" and (waiting for the Iddat period to finish,) Talaq is completed. So after that if the couple wants to go back together they will have to have a new nikah with (A) If this process is repeated for TWO more times that will complete three Talaqs after which they cannot remarry UNLESS the wife marries some body else (B) and gets divorced from (B) him (and after Iddat period) can remarry her original husband (A)
Unfortunately in most of the dramas and movies the divorce shown is the three times Talaq (in one sitting) even tough it was said only one time (I just saw a drama of Halala) I have never seen any Bollywood or Lolliwood movie or drama in which one time talaq is shown. There is one Bollywood movie old one "Nikah" in which this question is shown with clarification (Starring Raj Babbar) Any Talaq in such dramas is always taken as three talaq type