Imaikkaa Nodigal (2018)

A serial killer disrupts peace in Bengaluru by kidnapping, where he goes by the name of the highly notorious serial killer Rudra, who was announced dead five years ago. After another such case, in which the CBI are involved, he declares himself as the deceased Rudra and announces that he is now back in action.

Anjali Vikramadithyan IPS, who dealt with the earlier case of Rudra, is appointed to deal with him. In Chennai, Anjali's brother Arjun Prabakar, who is a MBBS doctor is facing a rough time in his relationship with Krithika Rao, by accusing her of cheating, and eventually break up with him. To make it up to her, he and his 2 year distant friend, Vinoth, travel to Bengaluru to meet her, but Arjun horribly enters the deadly scene between Rudra and Anjali. The cat-and-mouse game becomes intense when Rudra brings Arjun into the game by kidnapping Krithika and demanding a ransom from her father. In an effort to save Krithika, Arjun follows Rudra's orders and gets framed as Rudra, making things much more complicated for him. Anjali is suspended and her family gets under house arrest, where Inspector Narayan takes over the case. After a series of clues, Arjun deduces that ACP Martin Roy is the new Rudra and is trying to kill Krithika. He fights with Martin, only to get injured. Martin reveals that he was not the actual Rudra and reveals that Rudra was Anjali. Feeling betrayed that he was suspended from the case, Martin went rogue where he murdered his wife, and staged three murders of high profile people similar to the ones that Rudra had done. When Arjun confronts Anjali over being Rudra, she reveals that her real motive was to avenge the death of her husband Vikramadithyan, as he, along with Anjali were caught in an accident, caused by four influential drug addicted youngsters who decided to cover up the incident by murdering them and Vikramadithyan was left to die unattended with Anjali. However, a pregnant Anjali survived the accident and gave birth to her daughter Shalini. To seek vengeance for Vikramadithyan's death, Anjali created a serial killer named Rudra and brutally finished those youngsters, where she kills the last one and declares him as Rudra and closed the case. The clueless brother then feels guilty not knowing the pain his older sister had suffered. Arjun and Anjali together trap Martin using Narayan and Arjun fights and distracts Martin long enough for Anjali and Narayan to arrive with their force and Narayan shoots Martin dead. Arjun and Krithika reconcile while Anjali and Shalini listen to the recording of her father's last words for her.