The only bright spot is George Zucco's portrayal of a wacky passenger, Dr. Cardigan. His delight in showing Chan his experiment with a living brain is the highlight of the film. It comes as no surprise when Chan finally exposes the phoney passenger who is the killer. With Sen Yung, Pauline Moore, Kane Richmond, Phyllis Brooks, Slim Summerville, and Ricardo Cortez. Sidney Toler, Sen Yung and the writers here nail down the formula for a successful Chan picture.
Every element clicks beautifully into place.
Sen Yung shows the greatest improvement, and in this film Jimmy closely resembles Lee. Most likely this film was originally intended for Warner Oland and Keye Luke. Chan is called into a murder case in Reno by the husband of the main suspect. Summerville is very effective as a humorous, rustic lawman assigned to work with Chan. Chan attends a police lineup where he is stunned to find Jimmy.