The story revolves around Dr. Aditya Bhargav, a genius Neuro Surgeon (Arbaaz Khan) and his beautiful wife Mrs. Trishna Bhargav (Gracy Singh). On their fifth marriage anniversary, Trishna receives a information which comes as a shock to her, She comes to know that there is a third person in Aditya's life! Thereafter her life changes totally.
A series of incidence leads her to believe that some one is out to kill her. She has no one to turn to and can trust no one including her husband. She lives under constant fear and paranoia. Mysterious knocks at nights, a shadowy figure, and attacks on her life by mysterious persons only add to the suspense.
In one grand party, a Palmist - Mr. Raj (Zulfi Sayyed) seeing Dr. Aditya's hand predicts that he is going to kill his wife, this does not help Trishna's relationship with her husband and from then onwards there are many incidents in their life, which shatter them. Shocking incidents prove that Aditya is really trying to kill his wife; her friends; the Police and Trishna are all of the same opinion. But what is the reason to kill? That is "Wajahh... a reason to kill."
Pop Singer Sheerin To make matters worse Sheerin (Shamita Shetty) comes in their life .She was a patient of Dr.Aditya, he gave her life and now she lives because of Aditya and also for Aditya. Is Sheerin the reason to kill Trishna for Dr. Aditya?