Sunday, 7th October 2018 6:30PM BBC One (63 mins)
We don’t get aliens in Sheffield. 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?