Ek Din... Achanak(2011)

Ek Din... Achanak is a Hindi thriller that unfolds over a single, explosive day in a Mumbai penthouse. When Priyanka, wife of wealthy businessman Dhruv Mehra, is bound and confronted by a hired killer, she learns her husband has been unfaithful on their tenth wedding anniversary. The assassin, Pritam Kumar Chaturvedi, hesitates to complete his job after hearing her confession. When Dhruv returns home and denies any involvement in the murder plot, Priyanka faces an impossible choice: trust her husband or believe the stranger holding a gun. As tension mounts in their Malabar Hill home, the line between truth and deception blurs, forcing Priyanka to question everything she knows about her marriage and the people around her.