This is one of the low-budget "Charlie Chan" mysteries produced by Monogram Pictures. This time the murder victim (more precisely, the first of several victims!) is a scientist that everyone has good reason to hate. Chan steps in on the government's behalf to solve the mystery of how "dead men walk." Some decent performances (Mantan Moreland, Frank Reicher, Hardie Albright, and especially Alan Bridge as the hayseed sheriff), but the characters aren't as colorful, the direction not as brisk, and Charlie's inquisitive offspring not as engaging as usual. The mystery will definitely keep you guessing, however. This and star Sidney Toler are the main assets.