A new trailer for the upcoming "" Christmas special called "The Time of The Doctor", which will be the final episode of , has landed online. Sharing more footage, the video prepares fans for a farewell to the 11th incarnation of the Doctor.
"Everything ends, Clara," the doctor tells his companion and best friend, Clara, "and sooner than you think." Teasing the return of the doctor's old enemies, the extended preview also features Orla Brady as mysterious villainess Tasha Lem, who declares, "The Time War will begin anew. The siege of Trenzalore has now begun."