In this film, the Falcon (George Sanders) is about to travel on a trip to be married to his fiance Helen (Wendy Barrie), a woman who has finally “caught” him. James Gleason plays the police inspector, Edward Gargan is his detective, and Allen Jenkins is Goldy (perfect for this type of role, and Sanders’ sidekick in all but his last in the series). Helen is naturally “on edge”, apparently the Falcon has been this far (engaged, ring and all) three times previously. Goldy’s job throughout the film is to keep this fiance from running away, as well as to help Sanders out of a “jams”.
The story is about a scientist who has discovered a way to create diamonds so well that jewelers, who loaned him a $1,000 one to copy, can’t tell the difference. His goal, however, is to help government and industry by making commercial grade diamonds for $25, and not to collapse the retail market. The police inspector naturally wants to protect the scientist, but before the detective “bodyguard” arrives, criminals kidnap the scientist and his formula.
To keep the Falcon from helping the police, the criminals decide to neutralize him. An old female acquaintance (Mona Maris, also providing a jealousy plot-line for the fiance of the Falcon, associated with the criminals, attempts to persuade him to join them. When he refuses, they kidnap him. However, he escapes by making faces at police in a passing squad car, pretending to be drunk. The cops pull over the car and relieve the criminals of their prey. —Classicfilmguide.com