Answer:

DERR

Answer	Crossword Clue
DERR	Author Earl .. Biggers
DERR	Earl .. Biggers
DERR	Chan creator Earl .. Biggers

DERR	Charlie Chan creator Earl ... Biggers
DERR	Author Earl ... Biggers
DERR	Novelist Earl ... Biggers
DERR	Chan creator's middle name
DERR	Writer Earl .. Biggers
DERR	Middle name in mysteries
DERR	Name on the cover of "The Chinese Parrot"
DERR	Charlie Chan novelist Earl ... Biggers

DERR	Earl ... Biggers.
DERR	Earl ... Biggers, creator of Charlie Chan.
DERR	Earl ... Biggers, mystery writer.
DERR	Earl ... Biggers, Charlie Chan's creator.
DERR	Writer Earl ... Biggers
DERR	Earl ... Biggers
DERR	Middle name of Chan's creator
DERR	Earl ... Biggers, Chan's creator

DERR	Chan creator Earl ... Biggers
DERR	Biggers's middle name
DERR	Charlie Chan's creator Earl ... Biggers
DERR	Detective writer Earl ... Biggers
DERR	Earl ..... Biggers
DERR	Earl -- Biggers
DERR	Earl .... Biggers