Episode Title: Secrets of the Stars

Duration: Part one - 28 minutes and 16 seconds
Part two - 28 minutes and 2 seconds

Written by: Gareth Roberts

Directed by: Michael Kerrigan

Transmission Date: Part one - 20th October 2008
Part two - 27th October 2008

Ratings: 0.86 million (Part one)
0.7 million (Part two)

Synopses: Part one - Sarah Jane and the gang embark on another exciting new adventure this week as the children's drama series, produced by Russell T Davies, continues. Astrologer Martin Trueman causes a stir with his uncanny insights and predictions. While Sarah Jane doesn't believe in astrology, she does believe that all is not as it seems with Trueman. Around her, people are falling under Trueman's sinister spell and even Mr Smith doesn't understand what's going on.

Part two - As Trueman begins to take over the world's population through their star signs, Clyde takes a big gamble to help Sarah Jane, Luke and Rani into the astrologer's inner circle, as the children's drama series, produced by Russell T Davies, continues. But when Sarah Jane's plan to defeat Trueman fails, who will be Earth's last hope to overcome the Ancient Lights?

Cast List: Sarah Jane Smith - Elisabeth Sladen
The Doctor - David Tennant
Luke Smith - Tommy Knight
Clyde Langer - Daniel Anthony
Rani Chandra - Anjli Mohindra
Mr Smith - Alexander Armstrong
Gita Chandra - Mina Anwar
Haresh Chandra - Ace Bhatti
Martin Trueman - Russ Abbott
Cheryl Farley - Carryl Thomas
Stuart Farley - Ed Hughes
Lisa Trotter - Nicky Ladanowski