The Doctor and his companions have to do something. And then do it again. Then, like, five more times after that, as we explore a couple of episodes that depend on sequential plot devices.

The Doctor runs up against the cruelest villain of all: the cold, dispassionate monotony of the scientific method! It’s enough to make one go crazy.

The Doctor runs up against the cruelest villain of all: the cold, dispassionate monotony of the scientific method! It's enough to make one go crazy.

Daleks, Daleks, Daallllleeeeeeeks. The ironclad bad boys of Doctor Who return once again to reign terror on all they confront. And, you know, ultimately get wiped out by the end of each story.

Daleks, Daleks, Daallllleeeeeeeks. The ironclad bad boys of Doctor Who return once again to reign terror on all they confront. And, you know, ultimately get wiped out by the end of each story.

The Doctor is up against some big crabs! Big delicious crabs. Also, dystopia.

The Doctor is up against some big crabs! Big delicious crabs. Also, dystopia.

The Doctor intrudes into history by meeting, befriending, and affecting two influential authors: William Shakespeare and H.G. Wells. He is unable to use time travel to improve our book reports from seventh grade English class however.

The Doctor intrudes into history by meeting, befriending, and affecting two influential authors: William Shakespeare and H.G. Wells. He is unable to use time travel to improve our book reports from seventh grade English class however.

We meet Martha Jones for the first time. And we also meet sentient stones. But Martha is the more interesting of the two.