"डायरी" एक तरफ़ नीरजा को अपने परिवार के साथ वक़्त बिताने का मौक़ा छोड़ना पड़ा, वहीं दूसरी तरफ़ victim के पिता के साथ बातचीत से भी कोई नया सुराग़ नहीं मिला. और ना ही वेश्यवृति से जुड़े समाज सेवक से कोई जानकारी हासिल हो पायी. मिली तो सिर्फ़ एक diary. क्या वो नीरजा की कुछ मदद कर पाएगी? *** Diary Neerja has to cancel a family trip to the zoo to work on the case. The victim has been identified and his father will only talk to Neerja, much to the annoyance of her colleague. Neerja tries to draw up a perpetrator profile, but is confronted with conflicting information. She gets her hands on the victim's diary. Will it provide her with any answers? Meanwhile she struggles with the trauma of an old case and a conversation with social worker Vyom at the red light area near where the victim's body was found, does not offer much to go on.