Abigail Clayton獨自一人生活，已將近20年沒有離開她的公寓。當她的鄰居死亡，偵探Frank Giardello登門造訪展開調查，她原本秩序井然的世界開始瓦解。 Abigail Clayton獨自一人生活。一個人非常孤獨。實際上，這位女繼承人沒有離開她的曼哈頓公寓已將近20年。當她年邁的鄰居死亡促使紐約市警察局兇殺案偵探Frank Giardello登門造訪展開調查，內心恐懼不安的Abigail Clayton看到那位偵探在她門外，詢問她。Abigail Clayton曾試圖收購現在空置的那個公寓以確保她的隱私，當新租戶莉蓮和查理搬進來時就更加煩惱了。Abigail Clayton焦急地從她的前門的安全窺視孔監視她的新鄰居，但當她終於面對面地遇到了莉蓮和查理時她原本秩序井然的世界開始瓦解，她庇護的存在也開始成為意外和恐怖的方式威脅著。 An heiress who's been shut inside her apartment building for nearly two decades is forced to confront her fears after one of her neighbors is killed and a detective arrives to begin the investigation. Abigail Clayton lives alone. Very alone. In fact, the attractive heiress has not left her Manhattan loft apartment for almost two decades. The famous daughter of a wealthy industrialist, Abigail disappeared from the prying eyes of the press and the intrusiveness of her family on her 18th birthday, the day she received her massive inheritance. During years of self-imposed isolation, Abigail has had contact with only two people-her building's Concierge, Klandermann, with whom she communicates via notes-and Dr. Raymond Fontaine, a longtime family friend and her sole confidant for most of her life. When the death of her elderly neighbor prompts NYPD Homicide Detective Frank Giardello to launch an investigation, the agoraphobic Abigail is distressed to find him outside her door, asking to question her. Having tried to acquire the dead woman's now vacant apartment to ensure her privacy... A reclusive Manhattan heiress finds her carefully structured world beginning to crumble after her elderly neighbor dies, and a young couple moves into the vacant apartment. On her 18th birthday, Abigail Clayton (Selma Blair) received a staggering inheritance from her late father, an affluent industrialist. That same day, Abigail also escaped the probing lenses of the paparazzi by sealing herself away from the world in her massive loft. Nearly twenty years later, the only people Abigail interacts with are Klandermann (Kevin Pollak) the Concierge, and Dr. Raymond Fontaine (Beau Bridges), a trusted family friend. One day, Abigail's elderly neighbor dies under mysterious circumstances, and Homicide Detective Frank Giardello (Giovanni Ribisi) comes knocking on Abigail's door looking for answers. Concerned that the open apartment could provide a perfect perch for prying eyes, Abigail inquires about purchasing it to no avail. Shortly thereafter, Abigail spies Charlie (Jason Lee) and Lillian (Amy Smart) moving into the apartment. In the weeks that follow, Abigail begins religiously using her peephole to scrutinize her new neighbors' every move. But she can't stay locked away forever, and the moment Abigail meets Charlie and Lillian in person, the nightmare begins. Abigail Clayton (Selma Blair) lives alone. Very alone. In fact, the heiress has not left her Manhattan apartment for almost two decades. When the death of her elderly neighbor prompts NYPD Homicide Detective Frank Giardello (Giovanni Ribisi) to launch an investigation, the agoraphobic Abigail is distressed to find him outside her door, questioning her. Having tried to acquire the now vacant apartment to ensure her privacy, Abigail is further upset when new tenants Lillian (Amy Smart) and Charlie (Jason Lee) move in. Abigail anxiously monitors her new neighbors from the safety of her front door's peephole, but her well-ordered world begins to unravel when she finally encounters Lillian and Charlie face-to-face and her sheltered existence becomes threatened in unexpected and terrifying ways.