Part 6/9:
Visions of lost loved ones compel the crew into a downward spiral as Weir becomes more entwined with the ship's malevolent force. Desperate hallucinations plague Peters, who becomes convinced her son is aboard the Horizon. As the lines between reality and hallucination blur, the crew experiences visceral traumas that manifest physically, highlighting the horrors engrained in their pasts.
With dwindling air supplies and rising tension, Weir's obsession with his own loss drives him further into madness, leading him to create a covenant with the darkness residing within the ship. This darkness emerges as a ravenous entity that threatens to devour not just the crew but their very souls.