The most dangerous lies are the ones we tell ourselves.

After moving to Brooklyn, young architect Jackson Hart finds his career and marriage unraveling when he becomes convinced his neighbor—a charismatic underworld figure—is seducing his wife and plotting his downfall.

Jackson Hart, a young architect on the cusp of career success, moves into a historic Brooklyn brownstone with his wife, eager for a fresh start. But next door lives Ricci “Little Ricci” Santini, a charismatic figure with ties to the criminal underworld—and Jackson’s perfect life starts to crumble.

As a high-profile scandal erupts at his Manhattan firm, Jackson becomes convinced that Santini is pulling the strings behind the scenes. Paranoia takes hold, and Jackson suspects his neighbor is seducing his wife and orchestrating his downfall. But as his obsession deepens, the line between reality and delusion blurs.

When a tragic accident threatens Santini’s son, Jackson is forced to confront his darkest fears. But the question remains: Is Santini truly his tormentor—or has Jackson become a prisoner of his mind?