Here's the official overview and runtime for Ncuti Gatwa and Varada Sethu-starring Doctor Who Season 2 finale, S02E08: "The Reality War." ...

First introduced in 1985's The Mark of the Rani and originally portrayed by Kate O’Mara, the Rani has returned to Doctor Who in a bold new form, portrayed by Dobson and Emmy-winner Archie Panjabi, ...