“If she can live here her whole life, a couple of hours ain’t gonna kill me. They ain’t gonna kill me, right?” Montgomery, Alabama. 1955. The Doctor and her friends find themselves in the Deep South of America. As they encounter a seamstress by the name of Rosa Parks, they begin to wonder: is someone attempting to change history? Vinette Robinson (Sherlock, The A Word) and Josh Bowman (Revenge, Holby City) guest star in an episode written by acclaimed children’s author Malorie Blackman and directed by Mark Tonderai. 'Rosa' will air on BBC One and BBC America on Sunday 21st October.