The Mark of the Berserker - New Trailer

A new trailer is now being shown for The Sarah Jane Adventures The Mark of the Berserker part one and two. The trailer shows a glimpse of Maria and Alan Jackson, who left after The Last Sontaran. You can see the trailer below;

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The trailer also features a strange slug-like creature, set to feature in part two of the story, which will be shown this coming Monday on CBBC and the following Monday on BBC One.