Doctor_Who_Series_6_Episode_8_b0146gf8_p00jzdzk.mpg

The desperate search for Melody Pond sees the TARDIS crash-landing in 1930s Berlin, as the time-travelling drama returns. There, the Doctor comes face-to-face with the greatest war criminal in the universe. And Hitler.

Old friendships are tested to their limits as the Doctor suffers the ultimate betrayal and learns a harsh lesson in the cruellest warfare of all. As precious time ebbs away, the Doctor must teach his adversaries that time travel has responsibilities. And he must succeed before an almighty price is paid.
8. Let's Kill Hitler