What happens when the only witness to a crime is someone no one will believe? Anna Fox lives alone in her New York brownstone, trapped by agoraphobia and drowning in wine and old movies. Her days blur together in a haze of online therapy sessions, spying on her neighbors through her camera lens, and revisiting classic films where danger always lurks just out of frame. When the picture-perfect Russell family moves in across the street, Anna can't help but watch. She glimpses their lives through lit windows—a handsome father, a withdrawn teenage son, a beautiful mother. But one night, through her lens, Anna witnesses something shocking in the Russells' home. Something violent. Something that can't be unseen. She calls the police, certain of what she saw. But there's a problem: the woman who answers the door isn't the woman Anna met. Everyone insists Anna is mistaken. The Russells seem like the perfect family. And Anna? She's the unstable shut-in with a history of mixing medication and alcohol, whose grip on reality has been questioned before. As Anna fights to prove she's not losing her mind, the line between truth and delusion begins to blur. Someone is lying. Someone is in danger. And Anna must untangle what's real before it's too late—if she can trust herself at all.