Charlie Chan's Greatest Case Charlie Chan's Greatest Case Charlie Chan's Greatest Case (1933) is an American pre-Code murder mystery film starring Warner Oland as the Oriental detective Charlie Chan. It was based on the Earl Derr Biggers novel "The House Without a Key" (1925). Oland made a series of Charlie Chan films; along with three others, this one is considered to be a lost film. "The New York Times" reviewer wrote, "As far as the mystery of these particular murders is concerned it is not difficult for the audience to decide on the identity of the slayer, but the manner in which Chan makes
The Amazing Chan and the Chan Clan almost immediately, as it was deemed that the Asian cast's thick accents would be too confusing for young viewers to understand. With the new cast in place, old episodes were re-dubbed using the new voices. Prolific voice actor Keye Luke – who played Charlie's Number One Son in many of the Charlie Chan movie serials of the 1930s and 1940s – provided the voice for Mr. (Charlie) Chan, thus making him the first actor of Chinese ancestry to take the role; also thanks to Luke, Charlie now spoke whole sentences (as opposed to the original film series, in which he