The Crimson Horror star Dame Diana Rigg was a guest on Th Andrew Marr Show this morning and during her interview a clip from the upcoming Mark Gatiss story was shown - watch it in the player below. The 100th episode of Doctor Who
since its restart in 2005 and airs on May 4 in the UK and North America
and the following day in Poland, South Africa and Australia. Visit the episode section for more clips, pics and news HERE.