Doctor Who’s 50th anniversary script is under lock and key, programme’s boss Steven Moffat has said.
“One length I’ve gone to which is a really good security measure – I make sure I don’t get a script, because I will lose it,” said Steven Moffat, the show’s lead writer.
“I forbid people to hand me one. It’s on my computer under lock and key.”
Actor Matt Smith promised fans they “will not be disappointed” by the story.
“I read it and I clapped at the end. I think it’s hilarious, it’s epic and it’s vast,” he said at a Doctor Who series launch last week.
“It manages to pay homage to everything – and look forward.”
The first story of Doctor Who’s 2013 run, The Bells of Saint John, will be screened on Easter Saturday, March 30.
Described by Steven Moffat as a “proper London thriller”, it sees the Doctor and new companion Clara (Jenna-Louise Coleman) battling an evil entity in the world’s Wi-Fi networks.Future episodes see the return of the Cybermen and old enemy the Ice Warriors, who last appeared during the Jon Pertwee era in 1974.
“It’s going to be the biggest and best and most inventive and most exciting year for the show,” Matt Smith said.
The 50th anniversary special, due to begin filming in April, will be broadcast in 3D around the show’s birthday in November.
The first ever episode of Doctor Who, An Unearthly Child, with William Hartnell as the Doctor, was broadcast on 23 November 1963.