This carefully edited collection has been designed and formatted to the highest digital standards and adjusted for readability on all devices. The Charlie Chan Series The House Without a Key The Chinese Parrot Behind That Curtain The Black Camel Charlie Chan Carries On Keeper of the Keys Other Novels Seven Keys to Baldpate Love Insurance Inside the Lines The Agony Column (Second-Floor Mystery) Fifty Candles Earl Derr Biggers (1884-1933) was an American novelist and playwright best known for his mystery novels. His first novel Seven Keys to Baldpate was a major success and it was adapted into several movies and plays. Even greater success came with his series of detective novels featuring Chinese American detective Charlie Chan. Many of his novels were made into movies.