Doctor Who: Oxygen review

This week's episode--Oxygen--is the first to show Bill in serious danger, courtesy of a malfunctioning spacesuit that nearly kills her and also, ultimately, saves her from dying: a dichotomy that seems to point to the uneasy relationship some people have with capitalism--a theme that is explored here. And again racism is challenged. I'm reminded of classic Star Trek episodes that score an A-plus for science fiction, while still finding time to scrutinize modern-day prejudices. Not surprising, then, that the Doctor's first line is "space, the final frontier." Although, Oxygen--which too easily slips into on-the-nose dialogue in an otherwise solid Doctor Who episode that expertly knits chunks of knotty science into the plot--probably deserves a B-minus at best.