'Doctor Who' star David Tennant is to appear as the time-travelling hero in two episodes of the CBBC drama series 'The Sarah Jane Adventures'.
In the episodes investigative journalist Sarah Jane Smith (Elisabeth Sladen), a former assistant of the Doctor's, is reunited with him to face, in the words of the show's producer Russell T Davies, "their biggest threat ever".
Commenting, Sladen said: "When I heard the news that David was going to be joining us I was absolutely over the moon. Not only has it made my day but it will also make the viewers' day.
"It's fantastic news that Sarah Jane is going to spend some time working with The Doctor again and is testament to just how successful this CBBC series is."
