If you like Hitchcock's "39 Steps" or "The Man Who Knew Too Much", you're likely to enjoy this one, too. It's weakness, in comparison to "39 Steps" lies in a frustratingly shallow treatment of the characters. Development of the relationship between the protagonist Neale and the very photogenic Fraeulein Hilfe is disappointingly sketchy - and their unwavering trust in each other - and love - essentially instantaneous, not gradually won through tension, doubt and adversity. And our doubts concerning Neale's time in prison for murder are defused all too quickly, assuring us he's no "Stagefright" personality. I can't help thinking Lang attempted to emulate "39 Steps". The result's a fun film, with wonderful close-ups of a very young Millan and his girl, but of "thinner fabric". As in "39" or "North by Northwest", the plot doesn't resist much scrutiny - the bad guys' judgment pretty lame. The fun lies in character eccentricities, great photography, the creation of an artificial universe, etc. Personally, I find "Man Who Knew Too Much" too long, impossible to sit through a second time, excessive in several ways - overacted, over-dramatized; this film, like "39" or "North by Northwest", I have no problem watching again and again.