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.
Release Date : Oct 22, 1977
Genres : Science Fiction, Drama, Adventure
Production Company : BBC
Production Countries : United Kingdom
Original Language : English
Casts : Tom Baker, Louise Jameson, John Leeson, Michael Sheard, Brian Grellis, Jay Neill, Edmund Pegge, Frederick Jaeger
Director :
Status : Released
Budget : 0
Revenue : 0
