The Time War incarnation of the Doctor's best enemy is back, and the two Time Lords face each other once more - but who remembers whom? 7.1 The Forest of Penitence by Lou Morgan. Waking in an unusual forest with no memory of how he arrived there, the Master has little choice but to seek help from other survivors.But what is it they've all survived?7.2 The Players by Una McCormack. On the planet Trabus, the Master discovers a society where nobody is innocent, and the only true crime is to be a less successful villain than those around you. 7.3 Boundaries by Lizbeth Myles. As his companion Cole attempts to save a world, the Master discovers an extraterrestrial entity that that threatens to spread across the globe. 7.4 The Last Line by Lizzie HopleyAt the mercy of an ancient and powerful race, the Master calls upon his oldest friend in his hour of need.The problem is he doesn't recognise this incarnation of the Doctor... while the Doctor knows this Master all too well!CAST: Derek Jacobi (The War Master), David Tennant (The Doctor), Robyn Addison(Gallia), Cecilia Appiah (Ellie), Arlyon Bakare (Cato), Josh Berry (Theo), Phil Dunster(Scarp/Kerrif), Adetomiwa Edun (Carvell/Block), Steven Flynn (High Vector Goriant),Jonny Green (Cole), Jo Joyner (Fenice), Ella Kenion (Lucia), Deirdre Mullins (Dalfin), Sara Powell (Blythe/Confederation Official), Sophie Shad (Severine), Abigail Thaw(High Vector Salaskin).Other parts played by members of the cast.