《换脸陌生人》是一部由美国地区于2009年出品的惊悚类电影。该片由路易斯·邓肯担任编剧，杰夫·兰弗洛亲自指导拍摄。主要演员包括亚莉克兹·约翰逊、安德鲁·弗朗西斯等美国著名影星。
After the shocking untimely death of her hu*and, Shelley Stratton (Catherine Hicks) moves her daughter Alexis (Emily Hirst) and her adopted daughter Laurie (Alexz Johnson) to their remote summer house to give her family a fresh start. As Laurie begins to settle in and put her life back together, she gets the eerie feeling that she is constantly being watched. Her uneasiness grows when people start claiming to see her in places she has never been. The family's delicate state unr*els when Laurie unearths her dark past, discovering a twin sister that she never knew she had. Laurie is forced to delve deeper into her twin's secrets, for it turns out her twin has been locked up for years. Laurie must now understand their strange connection in order to prevent her sister from taking over her life and harming her loved ones.