Twelve hours after Rose’s departure, the doctor plans to return her to her house, but they show up a year later. Mickey is suspected of killing Rose, and her mother Jackie is upset with the doctor. A spaceship crashes into Big Ben and plummets into the River Thames, as Rose and the Doctor watch. Suspecting that this is a ruse, the Doctor learns that the ship was launched from Earth and that the pilot is actually a pig that has been altered by extraterrestrial technology. Since the prime minister cannot be found, Joseph Green steps in, and additional senior government officials Margaret Blaine and Oliver Charles are also summoned. The group is revealed to be the Slitheen, an alien family who have compressed themselves into human “suits”.