Impulse (2008)

Claire Dennison, succumbing to a moment of reckless abandon, ignites a passionate affair with a captivating stranger. The stranger bears an uncanny resemblance to her husband, blurring the lines of reality. However, this impulsive liaison soon unravels, revealing a chilling truth: her lover is not merely charming, but a dangerously unhinged psychopath, adept at manipulation and relentless in his pursuit. Claire now faces the terrifying consequences of her actions, trapped in a web of deceit and escalating danger. Her life irrevocably altered, she must confront the darkness she has unwittingly invited into her world.