During a lecture about his recent expedition to the Mongolian Desert, famed explorer Dr. John Benton suddenly collapses and dies after drinking from his water bottle. His cryptic last words, "Eternal Fire," become the only clue for Chinese detective Jimmy Wong and Police Captain Street. Benton's secretary, Win Lee, reveals that "Eternal Fire" refers to a scroll revealing the location of valuable oil deposits, prompting Wong and Street to investigate the murder among Benton's associates. Cast: - Keye Luke as James Lee Wong - Grant Withers as Police Captain Street - Lotus Long as Win Lee - Charles F. Miller as Dr. Benton - Huntley Gordon as Dr. Norman Wilkes - Virginia Carpenter as Louise Benton - John Dilson as Charles Fraser - Paul McVey as Detective Grady Runtime: 62 minutes