From his origin as a crotchety scientist in 1963 to his current place as the mad saviour of the universe, Doctor Who has metamorphosed in his 50 years on television. And yet the question about him remains the same: Who is he? The Doctors Are In is a guide to television's most beloved time traveller from the authors of Who Is the Doctor and Who's 50. This is a guide to the Doctor himself - who he is in his myriad forms, how he came to be, how he has changed (within the program itself and behind the scenes)... and why he's a hero to millions.