It's interesting how some people get so uptight in their reviews of the more avant-garde episodes of this series. Yet they rate these tired old things without much hesitation quite hight. Once again, an alien inhabits a crew members body. Once again, a dangerous personage is allowed the run of the ship. Once again, the Doctor seems to have more superhuman qualities and abilities. All the car stuff and some of the byplay are fun, but it's nothing special. Good old Seven smells things out again. Can one imaging what a valuable entity she is on board?