Boris Karloff stars as James Lee Wong in this thoughtful, action-packed mystery. The film gets off to a shocking start when Chinese Princess Lin Hwa (Lotus Long) makes an urgent visit to Wong's home where she is suddenly killed by a poisonous dart. Wong, together with hard-boiled Captain Street (Grant Withers) and ace reporter "Bobbie" Logan (Marjorie Reynolds) piece together a mysterious puzzle that involves airplane smuggling and international intrigue.
Mr. Wong in Chinatown was the third in a successful string of Monogram features that began in 1938 with
Mr. Wong, Detective and continued with
The Mystery of Mr. Wong (1939),
The Fatal Hour (1940),
Doomed to Die (1940) and
Phantom of Chinatown, with Keye Luke as Mr. Wong (1940).