This series was based upon a character developed in over 40 motion

pictures of the 1930s and 1940s starring Warner Oland and Sidney Toler

and Roland Winters. It was also a sequel to several radio series.

The films and radio series were based upon a character created in

novels of Earl Derr Biggers, but were said to have been loosely

based on the life of Honolulu police detective named Chang Apana.