Adelaide's external and internal terror faced with the Rutan's physical manifestation and psychological dominance over her, culminating in her murder.

The lighthouse crew's fragile camaraderie shatters as the shape-shifting Rutan reveals itself in the crew room. Adelaide collapses from exhaustion and fear before being brutally electrocuted by the creature posing …

The Rutan, still posing as Reuben, slips into the crew room while Skinsale tends to a fading Adelaide. The Doctor watches from outside the window before barely escaping inside. As …