A seemingly straightforward murder case takes a complex turn when the police discover that the prime suspect has an identical twin. As the investigation unfolds, the film delves into a thrilling cat-and-mouse game between the two brothers and the determined police officer trying to unravel the truth. The narrative is filled with twists and turns as loyalties are tested and the lines between innocence and guilt blur.

Thadam was generally well-received by critics and audiences for its engaging screenplay, strong performances, and suspenseful narrative. The film was praised for its clever plot twists and the lead actor's dual role. It is considered a solid entry in the Tamil thriller genre, offering a satisfying mystery with a good dose of action.

• Praised for its gripping narrative and unexpected plot twists.
• Arun Vijay's performance in a dual role was a significant highlight.
• The film successfully maintained suspense until the very end.

Google audience: Google users highly appreciated the film's suspenseful storyline and the effective portrayal of the protagonist's dual character. Many found the mystery element compelling and the pacing engaging, leading to a positive overall audience response.

The film's plot involving identical twins was inspired by a real-life incident.