Tennant, who stepped back into the Tardis to be the 14th doctor for three Doctor ... Luckily, the Doctor and his companion Dr Grace Holloway (Daphne Ashbrook) prevent the Earth's destruction ...

who has played both the 10th and 14th Doctor, could make a return as the full-time Time Lord. There is a 5/1 chance he’ll become the permanent replacement after he returned for a three-episode ...