All Of Doctor Who's Big Thematic Arcs Pay Off, With Clara's Final Test

This season of Doctor Who has been pretty tightly structured around a few big themes, and all of them were tied up in the season finale. A lot of them, not surprisingly, had to do with Clara Oswald — and we finally found out why she was chosen as the Doctor's companion. Spoilers! » 11/09/14 11:01am 11/09/14 11:01am