The Doctor and Ruby Sunday have faced the Bogeyman, fought against Maestro, and survived the battlefield of Kastarion 3. In the epic two-part season finale, The Doctor and Ruby arrive at UNIT headquarters on a top-secret mission and a long-buried secret awaits…
Ncuti GatwaThe Doctor
Millie GibsonRuby Sunday
Jemma RedgraveKate Lethbridge-Stewart
Yasmin FinneyRose Noble
Alexander DevrientColonel Christofer Ibrahim
Lenny RushMorris Gibbons
Genesis LyneaHarriet Arbinger
Aidan CookThe Vlinx
Nicholas BriggsThe Vlinx (voice)
Susan TwistSusan TriadFela LufadejuBailey Sinclair
Bonnie LangfordMelanie Bush
Michelle GreenidgeCarla Sunday
Anita DobsonMrs Flood
Angela WynterCherry Sunday
