Everyone knows Dr.Who is cheap and was made in a hurry and therefore you have to overlook some sloppy stuff and bad FX/cheesy monsters etc. This story is a case in point. You do have to suspend your disbelief quite a bit at times and a lot of fans just don't want to cut this story any slack. I think that's a pity as the script and story are supposed to be what counts and while this one is pretty sad in some production areas (there was a strike mid-production, apparently!) the fact is this is a fast paced, suspenseful story with a very, very good script. And the sets are impressive and the model work is good and the Silurians look quite good at times, too, so it aint all bad. Yes, there's some dodgy stuff, but if you focus on the story and just have fun, you may find it entertains. It has a great cliffhanger to part one and the final episode ends on a surprisingly hard note, too. Best of all, Peter Davison is terrific here as the underdog Fifth Doctor, he is dashing and heroic and determined to win, but faced with a moral dilemma. He dresses in a radiation suit which gives him the look of James Bond in Dr.No, and if you watch this to see a different side to the Fifth Doctor, you'll be impressed as he gets some great lines. At one point he tells Tegan to ask a huge green monster "nicely" to "go away". When she demands to know what she can possibly accomplish by staying out of the way, he tells her, "my peace of mind!" he also gets stuck into the war-mongering humans and says "I sometimes wonder why I like the people of this miserable planet so much". Yes, it lacks atmosphere, but it is still a good script and Davsion shines through. I watch it for him and the Silurian leader is strangely sad and sympathetic as non-human characters go. Overall, not as bad as its reputation, if you can focus on the good part, the Doctor and the script!