I, too, picture Warner Oland in the role of Charlie chan when I read the Biggers novels. It makes sense, actually, I feel, as Biggers, himself, was as pleased as could be with Oland's personification. Also, except for "Keeper of the Keys," all of the stories were originally made into Oland Chan films. (The "proto-Chan" silent movies as well as the talking "Behind That Curtain" were, in my opinion, Charlie Chan pictures in little more than name. Biggers' stories were changed drastically, especially in the silents, and Chan was little more than an afterthought.)