Invisible (2011)

A brutal killing drags an ordinary woman into a madman's delusional world. Cancer researcher Rebecca Wells finds herself captive of a homeless sociopath demanding her complicity in destroying the objects of his conspiracy paranoia. Dragged on a pell-mell race through the city's gritty alleys and condemned districts, she must gain his trust to escape and survive. But what she discovers along the way may change how she sees the world forever... and put her in even greater danger! What does the fall of the Soviet Union have to do with the space program? Who does GPS really help? What are those shadows we sometimes see at the edges of our vision? Who controls what we believe and know about the world?