Nasir Ahmad and Mumtaz Ahmad residing in Khirkhi extension, New Delhi were living happily with their 5 year old innocent Daughter Shaloo. Nasir was a Labor where as Mumtaz was working as a Maid but on 31st August, 2010 a shocking incident takes place as Shaloo goes missing from the park and Nasir and Mumtaz files a missing complaint of Shaloo as they fail to find her later, Mumtaz and Nasir reveal Delhi police that Shaloo use to often go out and play and she was well aware about where her house is located and use to always return home on time. Nasir tells them that, they have contacted all their relatives including Rukhsana who is Mumtaz's elder Sister and her Husband Kasim who is working with Nasir, but even they didn't had any clue about Shaloo. Delhi Police is trying to search Shaloo from since past 3 days thus they succeed in collecting an important information which was not revealed to them earlier that, Nasir is Shaloo's stepfather later, Mumtaz reveals Delhi Police that her Elder sister Rukhsana and her Husband Kasim had advised her to get married to Nasir as Mumtaz lost her first Husband in a Truck accident. Cops get convinced that Nasir who is Shaloo's stepfather is not involved in Shaloo's kidnapping later, the festival of Eid arrives but Shaloo is still missing. Poilce updates Shaloo's information on Zip net (Zonal Integrated Police Network) where Police from different states like Rajasthan, Uttarakhand, Himachal Pradesh, Uttar Pradesh etc. searches Shaloo in their respective areas but it was 2 years and Delhi Police were still not able to find Shaloo. One fine day, a shop owner residing in Zahidpur Village, Bhadohi shares Shaloo's incident with his Son who was staying in Khirkhi extension, New Delhi and thus he informs Delhi Police about the Girl and they succeed in finding Shaloo. Will Police succeed in finding Shaloo's Parents Nasir and Mumtaz?Crime Patrol coming back in its 4th season attempts to bring stories of crime happening all around the country. Crimes that tell us, we need to be careful, we need to be watchful. Crimes that tell us lives could have been saved.Every crime we hear of, either warns us to be careful or scares us, it could happen to us. Every crime ignites a feeling, "It should not have happened".Would knowing the "Why" behind a crime, help in stopping a crime from happening?"I don't like the way he looks at me", "I don't like the way he/she is behaving", "I think he/she is out of his/her mind", "I think he/she has gone crazy". That gaze, that quirky smile, that persistent stare which unnerves. It is difficult to understand the intentions but the hints are there.In a house a husband and wife argue, fight. A vessel comes flying, a glass breaks. Husband is angry and the wife is upset. That hatred, that ego. The distance that keeps growing. It is difficult to comprehend the damage, but the cracks are there.Feelings... expressions. Misunderstood, unresolved callings of the heart. The cracks are there. Too wide to be missed. Yet when the heart takes over the mind, the outcome is a mindless tragedy.Crime Patrol- Dastak will attempt to look at the signs, the signals that are always there before these mindless crimes are committed. Instincts/Feelings/Signals that so often tell us that not everything is normal. May be, that signal/feeling/instinct is just not enough to believe it could result in a crime. Unfortunately after the crime is committed, those same signals come haunting.