Thadam

Kavin tricks Ananthi by claiming the money will help Suruli pay off his debt. She gives him the cash despite suspecting the ruse. The deception sows seeds of trouble that ripple through the coming days.

That night, someone breaks into Akash's house and stabs him to death. The crime scene yields few clear leads, but the incident sets the investigation in motion and casts suspicion on the twins. The killer's identity remains murky at first.

Kavin uses Suruli's debt to arrange a payout and, by returning Ananthi's money, tells her the truth about his identity. Ananthi's trust in him is tested as the consequences of his schemes unfold. The event marks a shift from deceit to revelation.

A photo snapped nearby the crime scene shows a figure that could be either Ezhil or Kavin, triggering the police to pull the twins in for questioning. The identification process begins, with no one yet certain of their exact roles. The case tightens around their shared appearance.

Gopalakrishnan tortures Ezhil at the station, pressing him for an alibi. Ezhil maintains his car broke down and a call taxi driver helped him, an account that will later be scrutinized. Malarvizhi begins questioning Kavin and uses legal reasoning to resist coercion.

Malarvizhi uncovers the rivalry that Ezhil once helped Gopalakrishnan's daughter elope with her lover against her father's wishes. This backstory deepens the investigation and foreshadows the twins' tumultuous past.

A forensic report reveals the hair found at Akash's home doesn't match anyone in the household, hinting at a more complex killer's identity and bolstering the twins' involvement in the case. The discrepancy pushes investigators to reexamine alibis and connections.

DNA results reveal that Ezhil and Kavin are identical twins. They both confess to the same set of crimes and explain their separate upbringings after their parents' divorce. The confession reframes the case around their shared past and present actions.

The twins' backstory unfolds: Kavin grows up with a mother who gambles and ultimately commits suicide, while Ezhil stays with their father and faces violence that leads to a mental health crisis. These memories illuminate the roots of their bond and divides.

A call taxi driver who helped Ezhil on the night of the murder confirms he was stuck and that Suruli's debt was paid with gambling money, reinforcing the alibi and challenging Gopalakrishnan's framing. The corroboration helps settle parts of the timeline.

To protect the innocent from punishment, the sessions court acquits Kavin and Ezhil after the investigation, allowing them to walk free. The decision focuses on justice rather than punishment for the twins' shared crimes. The verdict remains controversial given their intertwined pasts.

A flashback reveals Ezhil murdered Akash after drugging, kidnapping and raping Deepika when they were younger, then bribing the police to drop the case. This revelation casts Ezhil's earlier actions in a new, darker light and reframes the motive behind the murder.

Kavin helps Ezhil by getting into trouble and being arrested to misdirect the police. Ezhil declares his intention to leave India, planning trips to Mumbai and Copenhagen, and gifts Kavin a 50% share of his assets as a tribute. They part with a sense of unresolved history.

After marrying Ananthi, Kavin realizes his lack of trust contributed to his mother's suicide. He vows to improve for his wife and honor his family by changing his ways. The family dynamics continue to echo in their lives.

Seven months later, investigators appear for a documentary shoot, describing the case as unprecedented. A colleague notes that similar cases have occurred in other countries, suggesting a broader pattern behind the twins' saga.