This is another 6 parter that should have been a 4 parter, slow and not too exciting. Even when the action did build up in the second half, I didn't find that it held my attention. The plot is standard Dr Who: on a far off planet, the good guys, who are just trying to scratch out a living, fight the evil corporate bad guys who want to strip the planet's resources, and local natives complicate things for both sides. Same old, same old. This storyline has been used several times on Dr Who, so maybe that's why I didn't find it too interesting, I knew from the start what was going to happen. It's ironic that this version of the storyline was possibly the first time it was used during the original broadcasts, because it's the first one after the Time Lords release the Tardis, but all the later shows by Jon and the other Doctors that used this storyline were made into DVDs before it, so maybe this serial deserves more credit than it's getting. Katy, Terrance, the director and a couple of secondary names do the commentary. Watchable, but wouldn't be my first choice.