In a South Yorkshire city, Ryan Sinclair, Yasmin Khan and Graham O'Brien are about to have their lives changed forever, as a mysterious woman, unable to remember her own name, falls from the night sky. Can they believe a word she says? And can she help solve the strange events taking place across the city?

Cast:Jodie Whittaker, Bradley Walsh, Mandip Gill, Tosin Cole, Sharon D. Clarke, Samuel Oatley,

Genre:Science Fiction, Drama, Adventure,

country:United Kingdom,

Production:BBC,