The Time Has Come,' The Walrus Said

We all know that time, from a non-linear, non-subjective viewpoint, is a very tricky thing, and the Doctor, Clara, and Sarah need all of it that they can get. Can Sarah and Clara defeat Jareth's cosmic labyrinth? Will Jareth survive a date with the Doctor? WHO knows. (I've changed the the rating to M because things are about to get scary).