Doctor Who: The Invisible Enemy

A three-man rocket crew are nearly done with their mission to Titan Base until a course change puts the rocket in the path of a strange cloud in space. By the time they arrive, they have come under the control of a sentient virus which threatens the galaxy. When the TARDIS picks up an emergency message, it flies into the cloud, infecting the Doctor. To save himself and others, he must undertake a dangerous journey.

Cast

Tom Baker The Doctor Louise Jameson Leela John Leeson K-9 Mk. I (voice) / Nucleus (voice) Michael Sheard Lowe Brian Grellis Safran Jay Neill Silvey Edmund Pegge Meeker Frederick Jaeger Professor Marius

Metadata from the source database.