Show 1: David Tennant
Episode: 4x01 | Airdate: Jan 5, 2007
Episode: 4x01 | Airdate: Jan 5, 2007
Episode: 4x02 | Airdate: Jan 12, 2007
Episode: 4x03 | Airdate: Jan 19, 2007
Episode: 4x04 | Airdate: Jan 26, 2007
Episode: 4x05 | Airdate: Feb 2, 2007
Episode: 4x06 | Airdate: Feb 9, 2007
Episode: 4x07 | Airdate: Feb 16, 2007