An action-packed novelisation of a classic TV adventure for the Fifth Doctor. When the TARDIS materialises on Earth in the year 2084, the Doctor meets an old enemy - the Sea Devils. Once the masters of this planet, they are now forced to live in the murky depths of the sea. But their intention is to reclaim their position of domination. The Sea Devils' associates in this dastardly plan to attack humanity's defences are the Silurians, also known to the Doctor of old... (P) 2022 BBC Studios Distribution Ltd © 2022 BBC Studios Distribution Ltd