Second in RKO's fun series of B mystery films about a suave detective named Gay Lawrence (aka The Falcon). In the first few movies in the series, the Falcon is played by the great George Sanders. Here the Falcon investigates the disappearance of an inventor who has discovered how to create synthetic diamonds that are identical to the real thing. Sanders is terrific in this role -- charming, witty, and flirtatious. It's a shame he didn't do more than the few he did. But his brother Tom Conway was a fine replacement so I can't complain. Wendy Barrie returns as the Falcon's love interest. Allen Jenkins steals the show as the comic relief sidekick, Goldie. The rest of the solid supporting cast includes James Gleason, Mona Maris, and Edward Gargan. Hans Conreid has a funny bit as a hotel clerk. In the previous Falcon movie, he played a police sketch artist. The Falcon series was admittedly formulaic, and this whole business about a kidnapped inventor is definitely nothing new, but it was undeniably entertaining. The brisk pace, short runtime, and healthy amounts of comedy help a lot. It's lighthearted fun for anybody looking to kill an hour and change.