On 16 July 2017, Whittaker was announced as the Thirteenth Doctor in the science fiction television series "Doctor Who"; she is the first woman to play the title role. She had previously worked with incoming "Doctor Who" showrunner Chris Chibnall on "Broadchurch". She admitted that she had to "tell a lot of lies" after being cast to keep the information secret and used the codeword "Clooney" when talking about the role. Whittaker kept her mother in "the inner circle" regarding knowledge of the role, as her father, Adrian, "would have the ability to tell the world".