The Man Who Knew Too Much - Cast
as Jo McKenna
as Lucy Drayton
as Edward Drayton
as Buchanan
as Louis Bernard
as Ambassador
as Val Parnell
as Jan Peterson
as Hank McKenna
as The assassin
as Woburn
as Helen Parnell
as Police inspector
as Handyman (uncredited)
as Edna (uncredited)
as Chauffeur (uncredited)
as French policeman (uncredited)
as (uncredited)
as Bernard's Date at Restaurant (uncredited)