Christian McKay Winston Churchill Actor Langley Kirkwood Franklin Delano Roosevelt Actor Martin Munro Frank Sawyers the Butler Actor Rafe Soule Young Winston Churchill Actor Deon Lotz Admiral Bertram Ramsay Actor Stephen Jennings Frederick 'Prof' Lindemann Actor Martin Kluge Joseph Stalin Actor Chris Van Rensburg Inspector Walter Thompson Actor Malcolm Venville Director Sara Bernstein Executive Producer Sara Enright Executive Producer Brian Grazer Executive Producer Ron Howard Executive Producer Justin Wilkes Executive Producer