Guest Stars Orla Brady as Catherine Tobias Menzies as Raymond Sinéad Cusack as Meg Sacha Dhawan as Vincent 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 Simon Donald as Dr Christianson
