How many copies of the books by the author of The Leopard have sold worldwide?
The Leopard (Nesbø novel): The Leopard is a crime novel by Norwegian novelist, Jo Nesbø. Jo Nesbø:  As of March 2014 more than 3 million copies of his novels have been sold in Norway, and his work has been translated into over 40 languages, selling 30 million copies worldwide.
i don't know