Earl Derr Biggers

A very well recieved series by Earl Derr Biggers are the books, featuring tropes. The most popular books are The Agony Column, Charlie Chan [3] Behind That Curtain, Complete Works of Earl Derr Biggers, Keeper of the Keys, Seven Keys to Baldpate, Love Insurance, Charlie Chan Mysteries - The Agony Column, Fifty Candles, Charlie Chan [4] The Black Camel, Charlie Chan [1] The House Without a Key, Charlie Chan The Silent Corpse, Charlie Chan [6] The Keeper of the Keys, which was published in 2022.