This months issue of Doctor Who Magazine reveals that David Tennant will be appearing in The Sarah Jane Adventures series three as the 10th Doctor. Russell T Davies told the magazine that David Tennant will be starring in a two-part story which is set to air in the Autumn. We already know that K9 will be appearing in a number of stories in the series, but Russell T Davies has confirmed that he will be in the episode with David Tennant, and this will possibly wave him off from the show to the new K9 series. Russell T Davies says "... it's more than just a cameo from the Tenth Doctor! He's a proper part of the story." He also adds that the episode is "extraordinary, wild and powerfully moving," and then adding, "let's just say that the wedding of Sarah Jane will be a day for everyone to remember!"