Another well-directed Warner Oland Chan filmmaking full use of stock footage from 1936 Berlin Olympics and the dirigible Hindenburg. Chan is on trail of stolen aircraft autopilot and killers who will make an attempt on his life and again kidnap No. 1 son Lee. Keye Luke is allowed to play his part without disguise and too much oriental racial humor. Good supporting cast and great shots of the game ceremonies and Jesse Owen in the relay race. For those who want to view more of these games, without Chan, see Leni Riefenstahl's Olympia 1. Teil - Fest der Völker and Olympia 2. Teil - Fest der Schönheit (1938). Continuity with other films suffers when Layne Tom, Jr. is introduced as #2 son Charlie. We have seen much older sons in his family at the circus and we will later see Victor Sen Yung as #2 son Jimmy and even later as Tommy Chan.
This is a good mystery, but once again it is impossible to share in the clues that only Chan can see and from that catch the thief and murderer. `When all players possess suspicious cards, good idea to have joker up sleeve.' Story line is somewhat believable enough for a good afternoon's watching. Concluding scenes have oriental detective admit he is willing to risk loss of son and self in order to maintain honor and loyalty to United States. One of the best in the series. Recommended.