Smartphones have become an essential commodity for humans. It is used by a daily person and is used in retrospective units, and that is why today it is not uncommon that in all cases, the first step in resolving a crime is to break down the CDR of the defendant. Today in almost every case of criminal misconduct, the suspect's cell phone testing plays an essential role in detecting wrongdoing. To track down suspects/criminals, intelligence officials need to process a suspect's Call Detail Record (CDR) that has changed designs from professional co-operatives. It is noteworthy that the anti-friendship groups have their own organisation and relationships with different offenders and are opposed to sections of society. They are often linked together by doing evil, or they may be familiar with the abuse. Many of their partners could not be convicted or their names kept in old cases. Writing a CDR to cover the benefit of the knowledge base is a sensible organisation to provide tangible evidence of potential suspects in a variety of contexts. This test paper examines a case-killing case model using CDR.

Index Terms- Graph theory, Call Detail Record