A set-up for the aliens by the Blackwood Project is soon spun on its head as an alien manages to infiltrate the Cottage.

The aliens plant subliminal messages in a musician's recordings to brainwash a brilliant scientist into creating a cure for them against the bacteria on Earth.

The theft of an Indian object provokes disgust from Ironhorse. But it also garners the aliens' interest, as it holds something that belongs to one of their ancient war machines.

To better understand their problem, the aliens begin abducting humans to learn the secret of their immune systems.

In 1953, aliens invaded Earth, but were stopped when they fell to the planet's bacteria - except one. Now this rebellious rogue alien uses Blackwood's meeting with the United Nations to help his own plan for global domination.

The aliens plan to disorganize human society by paralyzing its means of communication.

After a pregnant woman is possessed by an alien and gives birth, the child becomes the focus of a search as it may offer an immunity to Earth's bacteria.