The Doctor, Susan and Ian search the city for Barbara and learn that the area is contaminated with radiation.Then they encounter the Daleks.
Did You Know?
This episode was watched by 6.4 million viewers on its original transmission. See more
Just before the Doctor, Susan, and Ian are escorted into the cell (just after the camera has panned across from Barbara to the cell door), an off-screen voice can be faintly but coherently heard calling out the cue "stop". See more
Don't stop for anything. Straight there, straight back. An hour might make all the difference.
Featured in Doctor Who: Origins