Synopsis by Hans J. Wollstein
In the last of Monogram's "Mr. Wong" whodunits, Keye Luke takes over from Boris Karloff as the Chinese detective Jimmy Lee Wong, more of an amateur sleuth, really, than his eminent predecessor. The subject for Wong's examination is the poisoning of Dr. Benton (Charles F. Miller), the leader of an expedition to Mongolia and the possessor of a mysterious and seemingly deadly scroll. With Captain Street (Grant Withers) and the dead man's Chinese secretary (Lotus Long alternately aiding and obstructing the investigation, Wong gets to the bottom of things within the expected 68 minutes or so by using himself as a decoy.
robbery, detective, investigation, murder, private-detective, Asia, killing, oil