Charlie Chan (Sidney Toler) takes a trip to Paris for a reunion with his buddies from World War I only to find the City of Light plunged into darkness during a blackout that results in the murder of a local arms dealer. Upon further investigation, Chan discovers an evil spy plot to sell weapons to Germany prior to the outset of World War II! Lynn Bari, Richard Clarke, Harold Huber, and Leo G. Carroll co-star. 75 min. Standard; Soundtrack: English Dolby Digital stereo, Dolby Digital mono; featurettes; theatrical trailer; photo gallery.