The second episode carries on with the mocking of Darwin sceptics. Josiah Smith makes a monkey out of Reverend Matthews.
Ace is attacked by two monsters, they looks like a product of some kind of experimentation. Lucky for Ace, Nimrod arrives to save her. There is actually a spaceship below the house, only the Doctor has an inkling as to why it arrived on Earth.
Meanwhile the Doctor awakens Inspector Mackenzie from Scotland Yard whose body in inside a drawer. He has been asleep for two years and is now very hungry. He had originally arrived to investigate the disappearance of George Pritchard, the owner of the house.
The Doctor also makes a deal with a woman called Control who has been held captive in the spaceship by Josiah. He is not human but is now metamorphizing to human form.
This is a very cryptic story, even more so than episode one. It seems no one was interested in explaining the story to the audience. It seems the ship arrived to catalogue all the specimens in the planet.
While Part One had atmosphere. Part Two showed up the limitations of studio recordings. The outside shots and special effects of the lightning were too obvious of a studio setting. Especially when Ace opens the drapes to startle Josiah Smith's sensitivity to light. It was just darkness outside of the window.