The cops find a Thirukural note from Muthu's body also. Viktor gets permission from the Commissioner to question Lankeshwaran once more. Due to simmering ego clashes Thilak over Lankeshwaran's involvement, Viktor and Kishore assign 'friends of police' to spy on Lankeshwaran. Viktor suspects a mole in the department who leaked Sekar's case details and also meets criminal psychologist Nassar to analyse Lankeshwaran's videos.