I don't know, maybe the budget was running out or they wanted to film this quickly but this isn't really one of the better outings for the "Doctor" (Tom Baker) and his companions. It follows on, a little, from the previous "Ark in Space" series with them on Earth ensuring the passengers from that vessel are safely ensconced and safe. What they discover, though, is that what humans there are have been captured by a menacing "Sontaran" soldier called "Styre" (Kevin Lindsay - by now a bit of a regular in these leathers). It transpires that he has been sent by his high command to evaluate the stren... read the rest.