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 that had arrived a hundred years earlier. The monster had scared the locals who had captured and killed it. Joined by the Doctor and Amy Pond they discovered the ‘monster’ was an alien trapped on Earth. Together they helped release the alien and help the Doctor to return it home via the TARDIS. (DWAM: Most Haunted)