Series 4 - Silence in the Library

Information

Writer: Steven Moffat
Director: Euros Lyn
Script Editor: Helen Raynor
Producer: Suzie Liggat
Executive Producer(s): Russell T. Davies, Julie Gardner, Phil Collinson

Originally Broadcast: 31st May 2008
Duration: 45 mins

Synopsis
One hundred years ago, the universe's greatest library was sealed off, leaving only an enigmatic warning: "Count the shadows". But now, the shadows are moving again. The Doctor and Donna must uncover the terrible truth behind the Nodes and the Data Ghosts, to find the library's secret, and on the way they try to avoid the Vashta Nerada, piranhas of the air, shadows that melt the flesh.

Cast
David Tennant - The Doctor
Catherine Tate - Donna Noble
Alex Kingston – Professor River Song
Colin Salmon – Dr Moon
Eve Newton – The Girl
Mark Dexter – Dad
Sarah Niles – Node 1
Joshua Dallas – Node 2
Steve Pemberton - Strackman Lux
Talulah Riley – Miss Evangelista
Jessika Williams – Anita
O-T Fagbenle – Other Dave
Harry Peacock – Proper Dave