Tomorrow's Worlds: The Unearthly History of Science Fiction - Season 1 Episode 4 -

Of all Science Fiction’s themes, time travel is perhaps the most alluring of all. Dominic Sandbrook explores how writers and film-makers have embraced the thrill, and warned of the dangers, of meddling with the past and future. Joining Dominic on his journey through the Time Vortex are the creators and stars of classic works including Doctor Who, Back to the Future, Groundhog Day and the bestselling novel The Time Traveler’s Wife.