The search for the fourth segment of the Key to Time brings the Doctor and Romana back to Earth in the present day.
In 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.
As 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…
Written By: Peter Anghelides
Directed By: Lisa Bowerman
Mary Tamm (Romana), Madeleine Potter (Lady Ferril)
Producer David Richardson
Script Editor Jacqueline Rayner
Executive Producers Jason Haigh-Ellery and Nicholas Briggs