Duncan Maclain (Edward Arnold), a blind detective, is employed by his old friend Norma (Ann Harding). One of Norma's ex-lovers is now courting Norma's teenage step-daughter Barbara (Donna Reed) and wants to Duncan to find a way to get rid of him. However, when he is found murdered Norma is considered a suspect. Duncan visits Norma's house with his sight-dog Friday and begins to unravel a Nazi plot to steal military secrets...
A fairly straight forward crime drama, the plot is methodical and functional if not overly exciting though Hansen the butler (Stanley Ridges) made for an excellent villain. How Maclain uses his disability to disarm and fool his adversaries, before unleashing his judo skills, is excellent.
It was hoped to create a long running series out of Duncan Maclain but in the end only one more film was made. The film and character maybe lacked that final bit of sparkle. Friday is of course a Good Dog. Mantan Moreland appears working for Norma, taking time out from working for Charlie Chan!
