Ferril's Folly (Doctor Who: The Companion Chronicles, 5.11)

The search for the fourth segment of the Key to Time brings the Doctor and Romana back to Earth in the present day.\nIn a small village in Norfolk, former astronaut Lady Millicent Ferril has established an observatory, tracking a meteorite from the Cronquist System. It is a meteorite that almost killed her years before – and perhaps left her not entirely human.\nAs Ferril’s power grows, so does her influence. She can control metal. And anything metal – from a suit of armour to a bicycle – is now lethal…