"Silence in the Library" is the eighth episode of the fourth series of the revived British science fiction television series Doctor Who. It was first broadcast on BBC One on 31 May 2008. It is the first of a two-part story; the second part, "Forest of the Dead", aired on 7 June. The two episodes make up the second two-parter Steven Moffat contributed to the series after "The Empty Child" and "The Doctor Dances" from the first series.