Charlie Chan #8

Charlie Chan investigates the theft of a valuable emerald turtle that was awarded as a prize at a society show. When examining the emerald with a jeweler named Shelton Nash, Chan discovers a flaw in the stone and suspects it may be a fake. The mystery deepens when Chan's son becomes involved in the case, leading to the discovery of a criminal plot involving a gunman named Ruby Leggett, whose brother had connections to the crime. The case culminates with Charlie Chan unmasking the perpetrators and exposing Ruby Leggett's criminal scheme.