Doctor Who S4E4 · The Sontaran Stratagem (1)

Doctor Who

Season 4 · Episode 4 · The Sontaran Stratagem (1) · 47 min

Aided by the Rattigan Academy, the Sontarans establish a covert base at the mysterious ATMOS Factory. Can the Doctor stop the Sontarans from unleashing a potent terror that will bring the world to its knees?