It's time! After 161 episodes, the moment has arrived. It's time.  Time to go to the Library. Silence in the Library is the eighth episode of the 2008 series of Doctor Who starring Alex Kingston, David Tennant, and Catherine Tate. The Tenth Doctor and Donna Noble visit a planet sized library and meet that mysterious Professor River Song. Who is she? What does she want? How does she know the Doctor? Is Donna safe, or will she be saved? Has Kyle finally disconnected from reality? Plus, who turned out the lights? Find out the answers to these questions and more in this episode.  as the Discussing Network presents Discussing Who Episode 162. Hosted by Kyle Jones, Lee Shackleford, and Clarence Brown.