The serial also afforded Tom Baker a chance to take on both villainous and heroic roles in the same story, as William Hartnell and Patrick Troughton had and Peter Davison and Matt Smith would. (TV: The Massacre of St Bartholomew's Eve, The Enemy of the World, Arc of Infinity, Nightmare in Silver) Meglos came into being after Christopher H. Bidmead purposefully sought out John Flanagan and Andrew McCulloch as new talent. Nathan-Turner was unimpressed with the ideas put forward and the serial was shuffled to various placements in the season, largely because it didn't feature Adric.