Linx is providing advanced weaponry to Irongron and his men who prepare to attack Sir Edward's castle. The Doctor is forced to improvise a defence, but will it be enough?
See all episodes from Doctor Who
See all clips from Part 3
See all broadcasts of Part 3 (1)
Give it a go now!
See the behind-the-scenes videos, interviews, clips and other goodies!
Rebuild, rewire and recode your own Dalek in the new desktop game!
(may not be suitable for younger audiences).
Available on: DVD or Video download
From suppliers including: iTunes
Where to buy
See all galleries from Part 3
Sign in to the BBC, or Register