Trapped in a violent, controlling relationship with a wealthy scientist, Cecilia (ELISABETH MOSS) escapes in the dead of night and disappears into hiding. But when her abusive ex suddenly dies, Cecilia suspects his death was a hoax. As a series of eerie coincidences turns lethal, threatening the lives of those she loves, Cecilia’s sanity begins to unravel while she desperately tries to prove she is being hunted by someone nobody can see.

Jacob Singer is finally getting his life back together. He has a beautiful wife, a new born child and a successful career as surgeon in a VA hospital. When a stranger approaches him and tells him that his brother is actually alive and living in an underground shelter with other homeless vets, Jacob’s life starts to unravel. He begins hallucinating, believes he is being followed by violent attackers and becomes paranoid about the truth of what really happened to his brother. When he discovers that his brother is alive and addicted to an experimental drug, he uncovers a secret he never could have been prepared for.