Iru Dhuruvam

Viktor, devastated at Kishore's loss, is thrown off the case but convinces Priya to help him investigate Lankeshwaran privately. Thilak, reinstated to investigate the case, meets with Lankeshwaran and opens up to him about his strained marriage. Meanwhile, Priya tells Viktor that he could be Lankeshwaran's next target.....

While Viktor gets no response from Kishore or the constables, Gayathri finds the techie's body in a mysterious car parked near Anjali's house. When the commissioner learns of the turn of events, he reprimands Viktor and Thilak and gives Viktor a last chance to find Kishore.....

Viktor, along with Kishore and Constable Sabari, follows the location of a GPS tracker activated by the techie who helped him with Sekar's case. While Viktor finds the tracker, he realises the techie is still missing. Meanwhile, Sabari is run over by a car, and Kishore, who tries to help her, is knocked unconscious.....

When the police find a Thirukkaral note with Muthu's body, Viktor gets permission from the commissioner to question Lankeshwaran once more. Ego clashes over Lankeshwaran's involvement in the murders leads Viktor, along with Kishore, to set up discreet surveillance on the suspect.....

The comissioner, aware of the Thirukkural connection, convinces Viktor to help with the double murder case. Although having provided an alibi, Lankeshwaran draws the suspicion of Viktor when he discreetly quotes a Thirukkural couplet. Meanwhile, a constable's body is discovered in the trunk of a car near the police station.....

Six months after neutralising Sekar, Viktor has taken time off to care for Gayathri while searching for his missing wife. Meanwhile, Senior Inspector Kishore and his boss Thilak discover the bodies of two murdered cops in a car belonging to psychologist and motivational speaker Lankeshwaran.....