File:K9 vs Mr. Smith! The Lost Boy The Sarah Jane Adventures

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Mr. Smith betrays Sarah Jane and is using Luke's brain to crash The Moon into Earth - but Sarah Jane calls on a very good boy to help save the day! Subscribe to The Sarah Jane Adventures for more videos: http://bit.ly/SubscribeToSarahJane

WATCH MORE: Sarah Jane Smith: http://bit.ly/SarahJaneSmith Series 1: http://bit.ly/SJASeries1 Invasion of the Bane: http://bit.ly/InvasionOfTheBane

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Welcome to the official Sarah Jane Adventures channel! Investigative journalist Sarah Jane Smith, who once travelled across time and space as the Doctor's companion, now spends her time defending the Earth from alien threats in his absence. Together with her supercomputer Mr. Smith, her newly adopted son Luke - a human archetype created by aliens - and his friends Clyde and Maria, there are plenty of mysteries to solve and threats to defeat. Follow all their adventures and subscribe: http://bit.ly/SubscribeToSarahJane

This is a channel from BBC Studios who help fund new BBC programmes.

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