Kerri and Joe

From Tardis Wiki, the free Doctor Who reference

Kerri and Joe were two brave young children who decided to explore Harcourt Manor one dark and stormy night. The manor was believed to be haunted by the ‘spirit’ of a monster which had arrived a hundred years earlier. The monster had scared the locals who had captured and killed it. Joined by the Eleventh Doctor and Amy Pond, they discovered the ‘monster’ was an alien trapped on Earth. They helped release the alien and helped the Doctor return it home via the TARDIS. (DWA: Most Haunted)