In 1988, Philadelphia police officer Thomas Lockhart (Boyd Holbrook), hungry to become a detective, begins tracking a serial killer who mysteriously resurfaces every nine years. But when the killer's crimes begin to defy all scientific explanation, Lock's obsession with finding the truth threatens to destroy his career, his family, and possibly his sanity.

"In the Shadow of the Moon" is a genre-blending psychological thriller that examines the power of time, and how its passing can either bring us together or tear us apart.