Episode Title: Whatever Happened to Sarah Jane?

Duration: Part one - 27 minutes and 49 seconds
Part two - 28 minutes and 18 seconds

Written by: Gareth Roberts

Directed by: Graeme Harper

Transmission Date: Part one - 29th October 2007
Part two - 5th November 2007

Ratings: 1.2 million (Part one)
1.1 million people (Part two)

Synopses: Part one - In the fourth adventure of the drama series, Sarah Jane mysteriously disappears – just as a huge meteor threatens to crash straight into Earth. When Maria wakes up one morning it's as though Sarah Jane – and Luke – never existed. Living across the road in Sarah Jane's house is a woman called Andrea. And, with the attic empty and Mr Smith nowhere to be seen, every other trace of Sarah Jane has vanished – and Maria is the only one able to remember her. With the mysterious, hooded figure of the Trickster haunting Bannerman Road and the alien Graske meddling in time, Maria sets out to discover whatever happened to Sarah Jane. But as her journey takes her back to 1964, will she be able to find Sarah Jane in time to stop the meteor from destroying the world?

Part two - Maria finds herself taken back in time by the alien Graske to a pier in 1964, as the drama series continues. There, she meets a young girl her own age called Sarah Jane Smith who, with her friend Andrea, is about to embark on a fateful adventure. Taken by the Graske again, Maria is then reunited with the present-day Sarah Jane but, with them both trapped in limbo as part of the meddlesome Trickster's plan to wreak chaos, they are helpless to stop the huge meteor which is about to crash into the Earth. Alan, Maria's dad, is the only one able to remember Sarah Jane and Maria and faces a struggle to bring them back in time to save the world.

Cast List: Sarah Jane Smith — Elisabeth Sladen
Maria Jackson — Yasmin Paige
Luke Smith — Tommy Knight
Clyde Langer — Daniel Anthony
Mr Smith — Alexander Armstrong
Alan Jackson — Joseph Millson
Chrissie Jackson — Juliet Cowan
Andrea Yates — Jane Asher
The Graske — Jimmy Vee
The Trickster — Paul Marc Davies
Young Sarah Jane Smith — Jessica Ashworth
Young Andrea Yates — Francesca Miller
Newsreader — Jason Mohammad
Voice of The Graske — Philip Hurd-Wood