Review by BaronBl00d

This is a brief and entertaining Charlie Chan picture, starring the second and probably best Chan Sidney Toler. The story involves an eccentric inventor who has a new formula that will revolutionize a war industry. It seems that no one likes him including every member of his household. Naturally, he is killed, and Charlie Chan must figure out who did the dirty deed. This film was produced by Monogram Pictures near the end of the Chan series. It is a neat little story and has some wonderful lines spoken by Chan to his manservant Birmingham Brown and his number Four son, played by Edwin Luke. Mantan Moreland is wonderful as Brown bringing to the role some needed comic relief.