A time corridor forces the Doctor to the London docklands on present-day Earth where a bomb squad watches over some strange, alien canisters. At the other end, a battle cruiser lunches an assault on a prison space station that holds just one prisoner - Davros, creator of the Daleks. Written by
Did You Know?
This was intended to be the final story of the previous season, but it was delayed due to an electrician's strike at the BBC. See more
The boom mic shadow can be seen when the Doctor is trying to stabilize the Tardis. See more
The creatures of Earth have no stomach for judicial murder. They prefer to leave you to slowly rot and die. They call it "being humane."