Night Train To Munich (1940) - (Movie Clip) I'm Suffering From An Eye Strain

Substantial plot twist, to infuriate any viewer who was liking Paul Henreid as Karl Marsen, Czech concentration camp escapee who, now in London, reveals himself to be a Nazi mole, visiting an opthalmologist (Felix Aylmer) who, after a clever bit with an eye chart, does exposition, in Night Train To Munich, 1940, from director Carol Reed and producer Alexander Korda.