Guest Stars Orla Brady as Catherine Sacha Dhawan as Vincent Tobias Menzies as Raymond Sinéad Cusack as Meg Nigel Whitmey as Lowe Dan Li as Hatsuto Molly Jones as Scarlet Vera Filatova as Svetlana Tom Wlaschiha as Arkady Antonia Thomas as Maddy Ron Donachie as Sturridge Goran Kostic as Zubov Nick Nevern as Stas Richard Brake as McIndoe