Guest Stars Nicholas Rowe as Sir Anthony Blunt Lucy Akhurst as Elizabeth Elliott Lucy Russell as Jane Sissmore Monika Gossmann as Galina Jennifer Marsala as Iris Alex Price as Watcher Alexander Terentyev as Orchis Karel Roden as Col. Sergei Brontov Gilly Gilchrist as MI5 Plumber David Coomber as Embassy Duty Officer Natasha Cottriall as Singer Roger Barclay as John Profumo Philip Andrew as Dieter Elvira Rimbu as Russian Bureaucrat Noelia Gil as Pinar John Paul Wagner as Special Agent Nash Yasemin Özdemir as Erva Tugba Tirpan as Sofia Tom Radisch as Erich Vermehren Oliver Norman as Grieving Soldier Sam Thorpe-Spinks as Russian Soldier Simon Connolly as Attorney Lars van Riesen as Herman Orlando Wells as Michael Straight