Posted By John Bowman
The title of episode nine of the new series has been changed to Forest of the Dead.
Earlier this week, all Series Four episode names bar the penultimate one were announced in a Radio Times feature. In it, the ninth episode - the concluding instalment of this series' second two-parter - was named as River's Run, but CBBC Newsround now says it has exclusively been told of the title alteration.
The story has been written by Steven Moffat and has Alex Kingston and Colin Salmon as the guest stars.