Solitary(2009)

Sara (Amber Jaeger) suffers from agoraphobia, an obsessive fear of open spaces that renders her a virtual captive of her own home. When her husband, Mark (Kieron Elliott), disappears unexpectedly, Sara unravels emotionally and begins to panic. Turning to her estranged sister (Kristine Sullivan) and a psychiatrist (Andrew Qamar) for support, Sara soon begins to wonder whether the doctor is trying to help her or is plotting her demise.