In the heart of London, a young American woman named Kit Preston finds herself trapped in a web of intrigue and threats that put her life in danger. Recently married to the handsome and successful businessman, Brian, Kit enjoys life in her elegant home. However, her perfect world shatters when she begins to receive mysterious and terrifying phone calls from a stranger who is stalking her. As the threats intensify, Kit struggles to make sense of the situation, but her growing paranoia leads her family and friends to question her mental health.
Kit's attempts to seek help and protect herself are thwarted by the disbelief of those around her, pushing the protagonist deeper into a labyrinth of mistrust and despair. Her life becomes a game of cat and mouse as she uncovers that the mysterious stalker may be closer than she thinks. Over time, Kit's anguish leads her to explore dark secrets surrounding her husband and their social circles.
As the tension rises, she faces a difficult truth: can she trust those around her? With an unexpected ending, the film takes the viewer on a journey of suspense and fear, challenging the perception of reality and revealing the dark side of an seemingly perfect life. Will Kit manage to uncover the truth before it’s too late?