Extracted

A scientist who has invented a technology to construct virtual realities from people's memories finds himself in a perilous situation, after he reluctantly allows it to be used for a purpose he never imagined.
Thomas Jacobs invents a way to watch people's memories from the inside. Going against his morals, he accepts an offer to enter a heroin addict's memories to literally see if he committed a crime. However,a malfunction causes his consciousness to become trapped inside the criminal's mind. He remains a prisoner in the addict's memories for more than four years until he discovers the possibility of escape.