The Man Who Knew Too Much (1956)
A couple vacationing in Morocco with their young son accidentally stumble upon an assassination plot. When the child is kidnapped to ensure their silence, they have to take matters into their own hands to save him. london, england, assassination, espionage, spy, scotland yard, bus, paranoia, morocco, remake, conspiracy, whodunit, british spy, american, political intrigue , physician, frenchman, assassination attempt, cymbals, assassination plot