After an eight month wait, endless teasers, a world tour and pop-up shops to whet the appetite, the new Doctor is finally here. As foreshadowed, there is a significant change in the character of the Doctor (offset by many references to the past). This first episode of the new series was broadcast simultaneously around much of the world on TV and in cinemas and was pretty solid. We're introduced to the new Doctor and there's a new mystery already.