O Mistério do Rádio

Elenco

• 
  Sidney TolerCharlie Chan
• 
  Benson FongTommy Chan
• 
  Mantan MorelandBirmingham Brown, Chauffeur
• 
  Robert HomansCapt. Flynn
• 
  I. Stanford JolleyRolf Brot, alias Ralph Brett
• 
  Virginia BrissacMrs. Marsh
• 
  Jack NortonWillie Rand
• 
  Janet ShawGloria Bayne
• 
  Ben CarterBen Carter
• 
  Victoria FaustHulda Swenson / Janet Carter
• Helen DeverellDiane Hall
• 
  Leonard MudieHorace Karlos (sem créditos)
• 
  Reid KilpatrickMr. Chester, program announcer
• 
  Emmett VoganMr. Hamilton
• 
  Crane WhitleyHenchman Cooper
• 
  Kernan CrippsDetective (sem créditos)
• 
  Charles JordanNelson (sem créditos)
• 
  Kenner G. KempPolice Radio Expert (sem créditos)
• 
  Milton KibbeeHerbert Sinclair (sem créditos)
• 
  Frank MayoDet. Hodge (sem créditos)
• Tom QuinnChemist (sem créditos)
• 
  Charles SherlockSgt. McGraw (sem créditos)
• 
  Charles WagenheimRausch (sem créditos)

Equipe Técnica