Partners - Trouble Ho Gayi Double S01 E157 The Dead Body

Adi apprehends the blackmailer who had created nuisance in the police department. Manav is enraged to know that the blackmailer knew no secrets and took him for a ride. While one case is closed another one begins. Kogol asks Adi to bring a dead body found at the crime scene to the police station. Why is Kogol asking for the dead body?