Hayley went to a screening of the next episode of Doctor Who and talked to lots of the stars.
She asked writer Russell T Davies about his feelings on finishing writing the show, and tried to get a few hints on the upcoming twists and turns.
Actors John Simm, Catherine Tate and Bernard Cribbins chatted about the show.
But what did she find out? You'll have to watch and see!
Doctor Who and The End of Time Part One will be shown on Christmas Day between 6-7pm. The second part will shown on New Year's Day between 6.40pm - 7.55pm.