These three classic Charlie Chan mysteries made by famed B-movie titans Monogram pictures gives us two different Charlies in the persons of Sidney Toler (The Red Dragon) and Roland Winters (The Feathered Serpent, The Sky Dragon), but both styles of supersleuth must tackle truly draconian mysteries and murder. The Red Dragon finds Charlie (Toler) and Number Three Son Tommy (Benson Fong) cracking codes and uncovering killers down in Mexico City. The Feathered Serpent sees Charlie (Winters), Number One Son Lee (Keye Luke), and Tommy Chan (Victor Sen Yung) once again in Mexico on a deadly expedition for Aztec gold. The Sky Dragonpresents Charlie and Lee with an inflight locked-cabin murder mystery high above the clouds on board a commercial airliner.