Sidekick K9 returns to Doctor Who

Robot dog K9 will be reunited with Doctor Who in the new series after 24 years apart, say the show's producers. K9, who helped Tom Baker's Time Lord between 1977 and 1981, will join new Doctor David Tennant for one episode. The show, to be screened on BBC One next spring, sees the team investigate sinister events at a modern-day school.