Doctor Who (1963)
← Back to main
Frederick Jaeger as Professor Marius
Episodes 3
The Invisible Enemy (2)
October 8, 1977
• 25m
15x6
Leela and Lowe take the Doctor to the Bi-Al Foundation for help. But how can they cure an infection of the mind?
Read More
Expand
The Invisible Enemy (3)
October 15, 1977
• 25m
15x7
Miniaturised clones of the Doctor and Leela are injected into his brain. But they must now fight the virus on its own level. And its servants are closing in around them.
Read More
The Invisible Enemy (4)
October 22, 1977
• 25m
15x8
The Nucleus, now grown to human size, is determined to spawn and take over the Galaxy. Only the Doctor and Leela can stop it.
Read More