Which of the following did not star as an Asian (Chinese or Japanese) Detective?

Earl Derr Biggers, (August 26, 1884 – April 5, 1933) He is remembered primarily for his novels, especially those featuring the fictional Chinese American detective Charlie Chan, from which popular films were made in the United States and China.

Warner Oland (October 3, 1879 – August 6, 1938) was a Swedish American actor most remembered for his screen role as the detective Charlie Chan. He starred in a total of 16 Charlie Chan films.

Boris Karloff (23 November 1887 – 2 February 1969), an English actor, starred in a series of Mr. Wong films for Monogram Pictures. Five of the films starred Boris Karloff and were directed by William Nigh.

Peter Lorre, (26 June 1904 – 23 March 1964) played Kentaro Moto, a Japanese secret agent. Mr. Moto made his film debut in 1937, played by Hungarian-born actor Peter Lorre who was made to look stereotypically “Asian” with steel-rimmed (sometimes horn-rimmed) spectacles, false buckteeth, and slicked-down hair.