Watch Gunaah for Free: How to Stream the Movie Online at 123Movies. . Tough cop Prabha (Bipasha Basu) is haunted by the demons of her past. Being an illegitimate daughter of a prostitute, she has had a very bad childhood and there once occurred an incident in her life when she was driven to the point of committing a murder. But today, now that she is a cop, she believes that she can clear her conscience by reforming a criminal. Prabha's life is turned topsy-turvy with the entry of Aditya (Dino Morea), who is a good person at heart but was forced to take the path of crime due to the wrong doing of the system. Prabha goes to Aditya's house to nab him, but gets carried away when she sees him bathing....