The character Charlie Chan was created by Earl Derr Biggers and first appeared in print in The House Without a Key (1925). The copyright on this work was renewed in 1952, meaning that the character of Charlie Chan will enter public domain in the year 2020.
Yes, the original Charlie Chan novels by Earl Derr Biggers are in the public domain, but be sure to check the specific laws in your country for adaptations and films; for more interesting content, you might want to explore https://onlyfans.com/njmcdirect-payment.