The alien-busting antics continue in The Sarah Jane Adventures with the first part of a brand new story.
Joseph Serf has launched his new SerfBoard, the must-have computer that no one can resist owning. Intrigued, Sarah Jane takes Luke and Sky to investigate what's so compelling about Serf and his business.
Clyde and Rani take a SerfBoard to pieces, suspecting alien technology may be the answer...
Sarah Jane is played by the late Elisabeth Sladen, Joseph Serf by Mark Aiken, Luke by Tommy Knight, Sky by Sinead Michael, Clyde by Daniel Anthony and Rani by Anjli Mohindra.
The episode will be broadcast today at 5.15pm on CBBC and will be available on the BBC iPlayer shortly following transmission. Part two will be shown tomorrow.