| Actor | Character | Notes | | :--- | :--- | :--- | | | Inspector Viktor Selladurai | A haunted, off-duty cop, desperate to find his wife. | | Abhirami Venkatachalam | Geetha | Viktor's missing wife, whose fate is a central mystery. | | Prasanna | Lankeshwaran | A manipulative motivational speaker/psychologist brought in as the new antagonist. | | Linga | Inspector Thilak Rajan | A senior officer heading the murder investigation before Viktor joins. | | Abdool Lee | Senior Inspector Kishore | Viktor's colleague, helping to investigate the new case. | | Sai Priyanka Ruth | Priya | Role involves assisting Viktor in his investigation. |
: Viktor suspects Lankeshwaran is the mastermind behind the killings, but the antagonist is highly intelligent and leaves almost no evidence, even manipulating other officers to suspect Viktor himself. Iru Dhuruvam -2023- Season 2 Web Series
In an interview prior to the release of the second season, director Arun Prakash confirmed that a third season is already in development. He revealed that the story for the next installment has been written and that it would serve as the "ultimate end of the story". | Actor | Character | Notes | |
The use of classic Tamil couplets as cryptic clues anchors the modern thriller genre into local cultural themes. | | Linga | Inspector Thilak Rajan |