Plot details under wraps.
Hugh Bonneville | Laura Carmichael | Phyllis Logan | Robert James-Collier | Jim Carter | Michelle Dockery | Elizabeth McGovern | Joanne Froggatt | Brendan Coyle | Allen Leech | Michael Fox | Penelope Wilton | Harry Hadden-Paton | Raquel Cassidy | Sophie McShera | Kevin Doyle | Tuppence Middleton | Lesley Nicol | Samantha Bond | Sue Johnston | Douglas Reith | Paul Copley | Paul Giamatti | Joely Richardson | Alessandro Nivola | Simon Russell Beale | Arty Froushan | Dominic West