Guest Stars Thomas Doherty as Peter Zavadovsky Georgina Beedle as Wilhelmina John Hodgkinson as Rumyantsev Phil Dunster as Razumovsky Dominic Borelli as Landgrave of Hesse Darmstadt Ilona Bagele as Landgrave's Wife Sam Palladio as Vasilchikov Almantas Sinkunas as Cossack Audronis Rukas as Governor Marta Ormaniec as Governor's Wife