The third series of The Sarah Jane Adventures will continue today with the first part of this year's final story, The Gift. The synopsis for today's episode reads: Sarah Jane, Luke, Clyde and Rani face an old enemy, the green Slitheen, in the penultimate episode of this series of The Sarah Jane Adventures. When the Slitheen’s latest scheme is halted, their rivals, the Blathereen, arrive. Declaring peace between the planets, they offer Sarah Jane a gift – one that might change the future of the human race forever. The Gift features Elisabeth Sladen as Sarah Jane Smith alongside Thomas Knight as Luke Smith, Daniel Anthony as Clyde Langer and Anjli Mohindra as Rani Chandra. The episode also marks the return of the Slitheen, who previously starred in four episodes of series one and in series one of Doctor Who. Part one of The Gift will air today, Thursday the nineteenth of November, at 4:35pm on BBC One. It will also air in higher definition on BBC HD at the same time. The third series of The Sarah Jane Adventures will then continue with part two of The Gift tomorrow night. However note that tomorrow night's episode is the last in the series, but do not worry because a fourth series has been commissioned for 2010.