The Doctor Who Symphonic Spectacular was a visual and auditory wonder. Live monsters from the show roamed the stage and the aisles as the BBC National Orchestra of Wales and the BBC National Choir of Wales delighted fans with music from this cult TV programme.
For most of this latest series, I was bored, and I know I'm not alone. The acting and directing have been excellent, the writing so far as dialogue and pacing has also been quite good, but the show has felt like it's becoming a bit old hat.
The surprising answer is: nobody knows. Physicists, despite trying for almost a century to rule it out, have so far failed. The known laws of physics do not forbid time travel. In fact, they appear to make it easy - at least in principle.