Mansi and Arnab's Colleagues are having a great time in Mansi's Birthday party thus, Mansi proceeds towards Arnab's study room to call him as guests were waiting in the living room later, a major trouble takes place as Mansi spots Arnab's dead body whose face was completely destroyed. Team CID checks Arnab's house and his cupboard later, Senior Inspector Abhijeet observes a painting which was kept in his safe, so they ask Mansi about it and and she reveals team CID that selling paintings was Arnab's profession and on the other side, Arnab's cell phone is found in which last call was made to Tanmay and Freedy checks each and every guests pockets but fails to find anything. Mansi tells ACP that Pramod was not in the party area and one of the waiter present in the party reveals ACP Pradyuman that he saw a Man whose face was covered with mask running out of the house. There in the lab, Dr. Salunkhe tells ACP Pradyman that after testing Arnab's footprints they have come to a conclusion that these footprints belongs to a closed factory where chemicals are used in manufacturing Chocolates. Sachin tries to collect some information in couple of Chocolates factory and a Painter reveals team CID that this painting was drawn by Painter Ravi 30 years ago. Who killed Arnab in the study room? Will CID succeed in solving Arnab's case?The first thrilling investigative series on Indian Television, is today one of the most popular shows on Sony Entertainment Television. Dramatic and absolutely unpredictable, C.I.D. has captivated viewers over the last eleven years and continues to keep audiences glued to their television sets with its thrilling plots and excitement. Also interwoven in its fast paced plots are the personal challenges that the C.I.D. team faces with non-stop adventure, tremendous pressure and risk, all in the name of duty.The series consists of hard-core police procedural stories dealing with investigation, detection and suspense. The protagonists of the serial are an elite group of police officers belonging to the Crime Investigation Department of the police force, led by ACP Pradyuman [played by the dynamic Shivaji Satam]. While the stories are plausible, there is an emphasis on dramatic plotting and technical complexities faced by the police. At every stage, the plot throws up intriguing twists and turns keeping the officers on the move as they track criminals, led by the smallest of clues.