Doctor Who’s Producer Marcus Wilson isn’t only making a huge deal out of the Clara mystery, he has also promised that fãs will never guess the Doctor’s greatest secret.
'The Bells of St John'! 'The Rings of Akhaten'! 'The Cold War'! 'The Phantoms of Hex'! 'Journey to the Centre of the TARDIS'! 'The Crimson Horror'! 'The Last Cyberman'! Season Finale! Aaaaaarrrrrrrrrghhhhhh!!!!!!!